diff --git a/src/zod/index.ts b/src/zod/index.ts
index 1e1d030f..21b90747 100644
--- a/src/zod/index.ts
+++ b/src/zod/index.ts
@@ -91,11 +91,7 @@ const generateInputObjectFieldYupSchema = (
   field: InputValueDefinitionNode,
   indentCount: number
 ): string => {
-  let gen = generateInputObjectFieldTypeZodSchema(config, tsVisitor, schema, field.type);
-  if (config.directives && field.directives) {
-    const formatted = formatDirectiveConfig(config.directives);
-    gen += buildApi(formatted, field.directives);
-  }
+  const gen = generateInputObjectFieldTypeZodSchema(config, tsVisitor, schema, field, field.type);
   return indent(`${field.name.value}: ${maybeLazy(field.type, gen)}`, indentCount);
 };
 
@@ -103,38 +99,57 @@ const generateInputObjectFieldTypeZodSchema = (
   config: ValidationSchemaPluginConfig,
   tsVisitor: TsVisitor,
   schema: GraphQLSchema,
+  field: InputValueDefinitionNode,
   type: TypeNode,
   parentType?: TypeNode
 ): string => {
   if (isListType(type)) {
-    const gen = generateInputObjectFieldTypeZodSchema(config, tsVisitor, schema, type.type, type);
+    const gen = generateInputObjectFieldTypeZodSchema(config, tsVisitor, schema, field, type.type, type);
     if (!isNonNullType(parentType)) {
-      return `z.array(${maybeLazy(type.type, gen)}).nullish()`;
+      const arrayGen = `z.array(${maybeLazy(type.type, gen)})`;
+      const maybeLazyGen = applyDirectives(config, field, arrayGen);
+      return `${maybeLazyGen}.nullish()`;
     }
     return `z.array(${maybeLazy(type.type, gen)})`;
   }
   if (isNonNullType(type)) {
-    const gen = generateInputObjectFieldTypeZodSchema(config, tsVisitor, schema, type.type, type);
+    const gen = generateInputObjectFieldTypeZodSchema(config, tsVisitor, schema, field, type.type, type);
     return maybeLazy(type.type, gen);
   }
   if (isNamedType(type)) {
     const gen = generateNameNodeZodSchema(config, tsVisitor, schema, type.name);
+    if (isListType(parentType)) {
+      return `${gen}.nullable()`;
+    }
+    const appliedDirectivesGen = applyDirectives(config, field, gen);
     if (isNonNullType(parentType)) {
       if (config.notAllowEmptyString === true) {
         const tsType = tsVisitor.scalars[type.name.value];
         if (tsType === 'string') return `${gen}.min(1)`;
       }
-      return gen;
+      return appliedDirectivesGen;
     }
     if (isListType(parentType)) {
-      return `${gen}.nullable()`;
+      return `${appliedDirectivesGen}.nullable()`;
     }
-    return `${gen}.nullish()`;
+    return `${appliedDirectivesGen}.nullish()`;
   }
   console.warn('unhandled type:', type);
   return '';
 };
 
+const applyDirectives = (
+  config: ValidationSchemaPluginConfig,
+  field: InputValueDefinitionNode,
+  gen: string
+): string => {
+  if (config.directives && field.directives) {
+    const formatted = formatDirectiveConfig(config.directives);
+    return gen + buildApi(formatted, field.directives);
+  }
+  return gen;
+};
+
 const generateNameNodeZodSchema = (
   config: ValidationSchemaPluginConfig,
   tsVisitor: TsVisitor,
diff --git a/tests/zod.spec.ts b/tests/zod.spec.ts
index ba21e604..7f9be47c 100644
--- a/tests/zod.spec.ts
+++ b/tests/zod.spec.ts
@@ -280,4 +280,96 @@ describe('zod', () => {
       expect(result.content).toContain(wantContain);
     }
   });
+  describe('issues #19', () => {
+    it('string field', async () => {
+      const schema = buildSchema(/* GraphQL */ `
+        input UserCreateInput {
+          profile: String @constraint(minLength: 1, maxLength: 5000)
+        }
+
+        directive @constraint(minLength: Int!, maxLength: Int!) on INPUT_FIELD_DEFINITION
+      `);
+      const result = await plugin(
+        schema,
+        [],
+        {
+          schema: 'zod',
+          directives: {
+            constraint: {
+              minLength: ['min', '$1', 'Please input more than $1'],
+              maxLength: ['max', '$1', 'Please input less than $1'],
+            },
+          },
+        },
+        {}
+      );
+      const wantContains = [
+        'export function UserCreateInputSchema(): z.ZodObject<Properties<UserCreateInput>>',
+        'profile: z.string().min(1, "Please input more than 1").max(5000, "Please input less than 5000").nullish()',
+      ];
+      for (const wantContain of wantContains) {
+        expect(result.content).toContain(wantContain);
+      }
+    });
+    it('not null field', async () => {
+      const schema = buildSchema(/* GraphQL */ `
+        input UserCreateInput {
+          profile: String! @constraint(minLength: 1, maxLength: 5000)
+        }
+
+        directive @constraint(minLength: Int!, maxLength: Int!) on INPUT_FIELD_DEFINITION
+      `);
+      const result = await plugin(
+        schema,
+        [],
+        {
+          schema: 'zod',
+          directives: {
+            constraint: {
+              minLength: ['min', '$1', 'Please input more than $1'],
+              maxLength: ['max', '$1', 'Please input less than $1'],
+            },
+          },
+        },
+        {}
+      );
+      const wantContains = [
+        'export function UserCreateInputSchema(): z.ZodObject<Properties<UserCreateInput>>',
+        'profile: z.string().min(1, "Please input more than 1").max(5000, "Please input less than 5000")',
+      ];
+      for (const wantContain of wantContains) {
+        expect(result.content).toContain(wantContain);
+      }
+    });
+    it('list field', async () => {
+      const schema = buildSchema(/* GraphQL */ `
+        input UserCreateInput {
+          profile: [String] @constraint(minLength: 1, maxLength: 5000)
+        }
+
+        directive @constraint(minLength: Int!, maxLength: Int!) on INPUT_FIELD_DEFINITION
+      `);
+      const result = await plugin(
+        schema,
+        [],
+        {
+          schema: 'zod',
+          directives: {
+            constraint: {
+              minLength: ['min', '$1', 'Please input more than $1'],
+              maxLength: ['max', '$1', 'Please input less than $1'],
+            },
+          },
+        },
+        {}
+      );
+      const wantContains = [
+        'export function UserCreateInputSchema(): z.ZodObject<Properties<UserCreateInput>>',
+        'profile: z.array(z.string().nullable()).min(1, "Please input more than 1").max(5000, "Please input less than 5000").nullish()',
+      ];
+      for (const wantContain of wantContains) {
+        expect(result.content).toContain(wantContain);
+      }
+    });
+  });
 });