diff --git a/src/env.ts b/src/env.ts
index a52d1417..ced102fa 100644
--- a/src/env.ts
+++ b/src/env.ts
@@ -18,9 +18,8 @@ export function buildEnv() {
     const httpRequest = buildHttpRequest();
 
     // Infra
-    const editor = window.activeTextEditor;
-    if (!editor) {
-        throw new Error('No editor active');
+    function activeEditor() {
+        return window.activeTextEditor;
     }
     const htmlLanguageService = getHtmlLanguageService();
 
@@ -30,7 +29,7 @@ export function buildEnv() {
         workspacesRoot,
         host,
         httpRequest,
-        editor,
+        activeEditor,
         htmlLanguageService,
     });
 }
diff --git a/src/extension.ts b/src/extension.ts
index ebcac3c8..c50992b8 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -21,7 +21,7 @@ export async function activate(context: ExtensionContext) {
         workspacesRoot,
         host,
         httpRequest,
-        editor,
+        activeEditor,
         htmlLanguageService,
     } = buildEnv();
 
@@ -44,7 +44,7 @@ export async function activate(context: ExtensionContext) {
         z,
         context,
         filesByGlobPattern,
-        editor,
+        activeEditor,
         htmlLanguageService,
     }).setup();
 }
diff --git a/src/infra/vscode/commands/commands.config.ts b/src/infra/vscode/commands/commands.config.ts
index 75355fdd..e8cc311f 100644
--- a/src/infra/vscode/commands/commands.config.ts
+++ b/src/infra/vscode/commands/commands.config.ts
@@ -1,16 +1,16 @@
-import { TextEditor } from 'vscode';
+import { GetActiveEditor } from '../protocol';
 import { buildGetUserChoiceCommand } from './get-user-choice-command';
 import { buildGrowlErrorCommand } from './growl-error-command';
 import { buildInsertSnippetCommand } from './insert-snippet-command';
 import { buildMainCommand } from './main-command';
 import { buildPopUpSnippets } from './pop-up-snippets-command';
 
-export function buildCommands(args: { editor: TextEditor }) {
-    const { editor } = args;
+export function buildCommands(args: { activeEditor: GetActiveEditor }) {
+    const { activeEditor } = args;
 
     const generalCommands = [
         buildGetUserChoiceCommand(),
-        buildInsertSnippetCommand({ editor }),
+        buildInsertSnippetCommand({ activeEditor }),
         buildPopUpSnippets(),
         buildGrowlErrorCommand(),
     ];
diff --git a/src/infra/vscode/commands/insert-snippet-command.ts b/src/infra/vscode/commands/insert-snippet-command.ts
index d07f5d35..27021ada 100644
--- a/src/infra/vscode/commands/insert-snippet-command.ts
+++ b/src/infra/vscode/commands/insert-snippet-command.ts
@@ -1,10 +1,16 @@
 import { InsertSnippetCommand } from '../../../domain/commands';
-import { SnippetString, TextEditor } from 'vscode';
+import { SnippetString } from 'vscode';
+import { GetActiveEditor } from '../protocol';
 
 export function buildInsertSnippetCommand(args: {
-    editor: TextEditor;
+    activeEditor: GetActiveEditor;
 }): InsertSnippetCommand {
     return async function insertSnippet({ snippet }) {
-        await args.editor.insertSnippet(new SnippetString(snippet));
+        const editor = args.activeEditor();
+        if (!editor) {
+            return;
+        }
+
+        await editor.insertSnippet(new SnippetString(snippet));
     };
 }
diff --git a/src/infra/vscode/protocol.ts b/src/infra/vscode/protocol.ts
new file mode 100644
index 00000000..f53bc25d
--- /dev/null
+++ b/src/infra/vscode/protocol.ts
@@ -0,0 +1,5 @@
+import { TextEditor } from 'vscode';
+
+export type ActiveEditor = TextEditor | undefined;
+
+export type GetActiveEditor = () => ActiveEditor;
diff --git a/src/infra/vscode/z-vscode.ts b/src/infra/vscode/z-vscode.ts
index 0d589cfd..042ac863 100644
--- a/src/infra/vscode/z-vscode.ts
+++ b/src/infra/vscode/z-vscode.ts
@@ -1,4 +1,4 @@
-import { ExtensionContext, TextEditor } from 'vscode';
+import { ExtensionContext } from 'vscode';
 import { Z } from '../../domain/z';
 import { FilesByGlobPattern } from '../../domain/files';
 import { registerSnippetProvider } from './completion-item-provider';
@@ -8,16 +8,22 @@ import { registerCommand } from './command';
 import { buildCommands } from './commands';
 import { buildHtmlSnippetProvider } from './embedded';
 import { LanguageService } from 'vscode-html-languageservice';
+import { GetActiveEditor } from './protocol';
 
 export function buildZVSCode(args: {
     z: Z;
     context: ExtensionContext;
     filesByGlobPattern: FilesByGlobPattern;
-    editor: TextEditor;
+    activeEditor: GetActiveEditor;
     htmlLanguageService: LanguageService;
 }) {
-    const { z, context, filesByGlobPattern, editor, htmlLanguageService } =
-        args;
+    const {
+        z,
+        context,
+        filesByGlobPattern,
+        activeEditor,
+        htmlLanguageService,
+    } = args;
 
     return {
         setup() {
@@ -52,7 +58,9 @@ export function buildZVSCode(args: {
                 }),
             );
 
-            buildCommands({ editor }).forEach(registerCommand({ context }));
+            buildCommands({ activeEditor }).forEach(
+                registerCommand({ context }),
+            );
         },
     };
 }