diff --git a/integration/test-1110/parameters.txt b/integration/test-1110/parameters.txt
new file mode 100644
index 000000000..97bb08ab5
--- /dev/null
+++ b/integration/test-1110/parameters.txt
@@ -0,0 +1 @@
+useExactTypes=false
diff --git a/integration/test-1110/test-1110-test.ts b/integration/test-1110/test-1110-test.ts
new file mode 100644
index 000000000..b1991f3f2
--- /dev/null
+++ b/integration/test-1110/test-1110-test.ts
@@ -0,0 +1,8 @@
+import { UserRule } from "./test-1110";
+
+describe("test-1110", () => {
+  it("Able to create a partial user rule with reserved word messages", () => {
+    const simple: UserRule = UserRule.fromPartial({ UUID: "foo" });
+    expect(simple).toBeTruthy();
+  });
+});
diff --git a/integration/test-1110/test-1110.proto b/integration/test-1110/test-1110.proto
new file mode 100644
index 000000000..ee5b6ae82
--- /dev/null
+++ b/integration/test-1110/test-1110.proto
@@ -0,0 +1,29 @@
+syntax = "proto3";
+
+message UserRule {
+    // just some fake rule for testing
+    string UUID = 1 [json_name = "uuid"];
+}
+
+message Object {
+    string namespace = 1;
+    string name = 2;
+}
+
+message Boolean {
+    string namespace = 1;
+    string name = 2;
+}
+
+message Symbol {
+    string namespace = 1;
+    string name = 2;
+}
+
+message Function {
+    string namespace = 1;
+    string name = 2;
+}
+
+service APIService {
+}
diff --git a/integration/test-1110/test-1110.ts b/integration/test-1110/test-1110.ts
new file mode 100644
index 000000000..51c2baa1e
--- /dev/null
+++ b/integration/test-1110/test-1110.ts
@@ -0,0 +1,432 @@
+// Code generated by protoc-gen-ts_proto. DO NOT EDIT.
+// source: test-1110.proto
+
+/* eslint-disable */
+import { BinaryReader, BinaryWriter } from "@bufbuild/protobuf/wire";
+
+export const protobufPackage = "";
+
+export interface UserRule {
+  /** just some fake rule for testing */
+  UUID: string;
+}
+
+export interface Object {
+  namespace: string;
+  name: string;
+}
+
+export interface Boolean {
+  namespace: string;
+  name: string;
+}
+
+export interface Symbol {
+  namespace: string;
+  name: string;
+}
+
+export interface FunctionMessage {
+  namespace: string;
+  name: string;
+}
+
+function createBaseUserRule(): UserRule {
+  return { UUID: "" };
+}
+
+export const UserRule: MessageFns<UserRule> = {
+  encode(message: UserRule, writer: BinaryWriter = new BinaryWriter()): BinaryWriter {
+    if (message.UUID !== "") {
+      writer.uint32(10).string(message.UUID);
+    }
+    return writer;
+  },
+
+  decode(input: BinaryReader | Uint8Array, length?: number): UserRule {
+    const reader = input instanceof BinaryReader ? input : new BinaryReader(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseUserRule();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1: {
+          if (tag !== 10) {
+            break;
+          }
+
+          message.UUID = reader.string();
+          continue;
+        }
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skip(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): UserRule {
+    return { UUID: isSet(object.uuid) ? globalThis.String(object.uuid) : "" };
+  },
+
+  toJSON(message: UserRule): unknown {
+    const obj: any = {};
+    if (message.UUID !== "") {
+      obj.uuid = message.UUID;
+    }
+    return obj;
+  },
+
+  create(base?: DeepPartial<UserRule>): UserRule {
+    return UserRule.fromPartial(base ?? {});
+  },
+  fromPartial(object: DeepPartial<UserRule>): UserRule {
+    const message = createBaseUserRule();
+    message.UUID = object.UUID ?? "";
+    return message;
+  },
+};
+
+function createBaseObject(): Object {
+  return { namespace: "", name: "" };
+}
+
+export const Object: MessageFns<Object> = {
+  encode(message: Object, writer: BinaryWriter = new BinaryWriter()): BinaryWriter {
+    if (message.namespace !== "") {
+      writer.uint32(10).string(message.namespace);
+    }
+    if (message.name !== "") {
+      writer.uint32(18).string(message.name);
+    }
+    return writer;
+  },
+
+  decode(input: BinaryReader | Uint8Array, length?: number): Object {
+    const reader = input instanceof BinaryReader ? input : new BinaryReader(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseObject();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1: {
+          if (tag !== 10) {
+            break;
+          }
+
+          message.namespace = reader.string();
+          continue;
+        }
+        case 2: {
+          if (tag !== 18) {
+            break;
+          }
+
+          message.name = reader.string();
+          continue;
+        }
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skip(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): Object {
+    return {
+      namespace: isSet(object.namespace) ? globalThis.String(object.namespace) : "",
+      name: isSet(object.name) ? globalThis.String(object.name) : "",
+    };
+  },
+
+  toJSON(message: Object): unknown {
+    const obj: any = {};
+    if (message.namespace !== "") {
+      obj.namespace = message.namespace;
+    }
+    if (message.name !== "") {
+      obj.name = message.name;
+    }
+    return obj;
+  },
+
+  create(base?: DeepPartial<Object>): Object {
+    return Object.fromPartial(base ?? {});
+  },
+  fromPartial(object: DeepPartial<Object>): Object {
+    const message = createBaseObject();
+    message.namespace = object.namespace ?? "";
+    message.name = object.name ?? "";
+    return message;
+  },
+};
+
+function createBaseBoolean(): Boolean {
+  return { namespace: "", name: "" };
+}
+
+export const Boolean: MessageFns<Boolean> = {
+  encode(message: Boolean, writer: BinaryWriter = new BinaryWriter()): BinaryWriter {
+    if (message.namespace !== "") {
+      writer.uint32(10).string(message.namespace);
+    }
+    if (message.name !== "") {
+      writer.uint32(18).string(message.name);
+    }
+    return writer;
+  },
+
+  decode(input: BinaryReader | Uint8Array, length?: number): Boolean {
+    const reader = input instanceof BinaryReader ? input : new BinaryReader(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseBoolean();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1: {
+          if (tag !== 10) {
+            break;
+          }
+
+          message.namespace = reader.string();
+          continue;
+        }
+        case 2: {
+          if (tag !== 18) {
+            break;
+          }
+
+          message.name = reader.string();
+          continue;
+        }
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skip(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): Boolean {
+    return {
+      namespace: isSet(object.namespace) ? globalThis.String(object.namespace) : "",
+      name: isSet(object.name) ? globalThis.String(object.name) : "",
+    };
+  },
+
+  toJSON(message: Boolean): unknown {
+    const obj: any = {};
+    if (message.namespace !== "") {
+      obj.namespace = message.namespace;
+    }
+    if (message.name !== "") {
+      obj.name = message.name;
+    }
+    return obj;
+  },
+
+  create(base?: DeepPartial<Boolean>): Boolean {
+    return Boolean.fromPartial(base ?? {});
+  },
+  fromPartial(object: DeepPartial<Boolean>): Boolean {
+    const message = createBaseBoolean();
+    message.namespace = object.namespace ?? "";
+    message.name = object.name ?? "";
+    return message;
+  },
+};
+
+function createBaseSymbol(): Symbol {
+  return { namespace: "", name: "" };
+}
+
+export const Symbol: MessageFns<Symbol> = {
+  encode(message: Symbol, writer: BinaryWriter = new BinaryWriter()): BinaryWriter {
+    if (message.namespace !== "") {
+      writer.uint32(10).string(message.namespace);
+    }
+    if (message.name !== "") {
+      writer.uint32(18).string(message.name);
+    }
+    return writer;
+  },
+
+  decode(input: BinaryReader | Uint8Array, length?: number): Symbol {
+    const reader = input instanceof BinaryReader ? input : new BinaryReader(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseSymbol();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1: {
+          if (tag !== 10) {
+            break;
+          }
+
+          message.namespace = reader.string();
+          continue;
+        }
+        case 2: {
+          if (tag !== 18) {
+            break;
+          }
+
+          message.name = reader.string();
+          continue;
+        }
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skip(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): Symbol {
+    return {
+      namespace: isSet(object.namespace) ? globalThis.String(object.namespace) : "",
+      name: isSet(object.name) ? globalThis.String(object.name) : "",
+    };
+  },
+
+  toJSON(message: Symbol): unknown {
+    const obj: any = {};
+    if (message.namespace !== "") {
+      obj.namespace = message.namespace;
+    }
+    if (message.name !== "") {
+      obj.name = message.name;
+    }
+    return obj;
+  },
+
+  create(base?: DeepPartial<Symbol>): Symbol {
+    return Symbol.fromPartial(base ?? {});
+  },
+  fromPartial(object: DeepPartial<Symbol>): Symbol {
+    const message = createBaseSymbol();
+    message.namespace = object.namespace ?? "";
+    message.name = object.name ?? "";
+    return message;
+  },
+};
+
+function createBaseFunctionMessage(): FunctionMessage {
+  return { namespace: "", name: "" };
+}
+
+export const FunctionMessage: MessageFns<FunctionMessage> = {
+  encode(message: FunctionMessage, writer: BinaryWriter = new BinaryWriter()): BinaryWriter {
+    if (message.namespace !== "") {
+      writer.uint32(10).string(message.namespace);
+    }
+    if (message.name !== "") {
+      writer.uint32(18).string(message.name);
+    }
+    return writer;
+  },
+
+  decode(input: BinaryReader | Uint8Array, length?: number): FunctionMessage {
+    const reader = input instanceof BinaryReader ? input : new BinaryReader(input);
+    let end = length === undefined ? reader.len : reader.pos + length;
+    const message = createBaseFunctionMessage();
+    while (reader.pos < end) {
+      const tag = reader.uint32();
+      switch (tag >>> 3) {
+        case 1: {
+          if (tag !== 10) {
+            break;
+          }
+
+          message.namespace = reader.string();
+          continue;
+        }
+        case 2: {
+          if (tag !== 18) {
+            break;
+          }
+
+          message.name = reader.string();
+          continue;
+        }
+      }
+      if ((tag & 7) === 4 || tag === 0) {
+        break;
+      }
+      reader.skip(tag & 7);
+    }
+    return message;
+  },
+
+  fromJSON(object: any): FunctionMessage {
+    return {
+      namespace: isSet(object.namespace) ? globalThis.String(object.namespace) : "",
+      name: isSet(object.name) ? globalThis.String(object.name) : "",
+    };
+  },
+
+  toJSON(message: FunctionMessage): unknown {
+    const obj: any = {};
+    if (message.namespace !== "") {
+      obj.namespace = message.namespace;
+    }
+    if (message.name !== "") {
+      obj.name = message.name;
+    }
+    return obj;
+  },
+
+  create(base?: DeepPartial<FunctionMessage>): FunctionMessage {
+    return FunctionMessage.fromPartial(base ?? {});
+  },
+  fromPartial(object: DeepPartial<FunctionMessage>): FunctionMessage {
+    const message = createBaseFunctionMessage();
+    message.namespace = object.namespace ?? "";
+    message.name = object.name ?? "";
+    return message;
+  },
+};
+
+export interface APIService {
+}
+
+export const APIServiceServiceName = "APIService";
+export class APIServiceClientImpl implements APIService {
+  private readonly rpc: Rpc;
+  private readonly service: string;
+  constructor(rpc: Rpc, opts?: { service?: string }) {
+    this.service = opts?.service || APIServiceServiceName;
+    this.rpc = rpc;
+  }
+}
+
+interface Rpc {
+  request(service: string, method: string, data: Uint8Array): Promise<Uint8Array>;
+}
+
+type Builtin = Date | Function | Uint8Array | string | number | boolean | undefined;
+
+export type DeepPartial<T> = T extends Builtin ? T
+  : T extends globalThis.Array<infer U> ? globalThis.Array<DeepPartial<U>>
+  : T extends ReadonlyArray<infer U> ? ReadonlyArray<DeepPartial<U>>
+  : T extends {} ? { [K in keyof T]?: DeepPartial<T[K]> }
+  : Partial<T>;
+
+function isSet(value: any): boolean {
+  return value !== null && value !== undefined;
+}
+
+export interface MessageFns<T> {
+  encode(message: T, writer?: BinaryWriter): BinaryWriter;
+  decode(input: BinaryReader | Uint8Array, length?: number): T;
+  fromJSON(object: any): T;
+  toJSON(message: T): unknown;
+  create(base?: DeepPartial<T>): T;
+  fromPartial(object: DeepPartial<T>): T;
+}
diff --git a/src/visit.ts b/src/visit.ts
index 8ae055be6..a4f3f9730 100644
--- a/src/visit.ts
+++ b/src/visit.ts
@@ -60,7 +60,7 @@ export function visit(
   });
 }
 
-const builtInNames = ["Date"];
+const builtInNames = ["Date", "Function"];
 
 /** Potentially suffixes `Message` to names to avoid conflicts, i.e. with `Date`. */
 function messageName(message: DescriptorProto): string {