diff --git a/apps/code/src/renderer/features/code-editor/components/CodeMirrorDiffEditor.tsx b/apps/code/src/renderer/features/code-editor/components/CodeMirrorDiffEditor.tsx
index abe820823..fa76880f6 100644
--- a/apps/code/src/renderer/features/code-editor/components/CodeMirrorDiffEditor.tsx
+++ b/apps/code/src/renderer/features/code-editor/components/CodeMirrorDiffEditor.tsx
@@ -38,7 +38,7 @@ export function CodeMirrorDiffEditor({
   const toggleHideWhitespaceChanges = useDiffViewerStore(
     (s) => s.toggleHideWhitespaceChanges,
   );
-  const extensions = useEditorExtensions(filePath, !onContentChange, true);
+  const extensions = useEditorExtensions(filePath, true, true);
   const options = useMemo(
     () => ({
       original: originalContent,
diff --git a/apps/code/src/renderer/features/code-editor/hooks/useEditorExtensions.ts b/apps/code/src/renderer/features/code-editor/hooks/useEditorExtensions.ts
index d957114fb..b9e29ab2b 100644
--- a/apps/code/src/renderer/features/code-editor/hooks/useEditorExtensions.ts
+++ b/apps/code/src/renderer/features/code-editor/hooks/useEditorExtensions.ts
@@ -39,7 +39,7 @@ export function useEditorExtensions(
       theme,
       mergeViewTheme,
       EditorView.editable.of(!readOnly),
-      ...(readOnly ? [EditorState.readOnly.of(true)] : []),
+      ...(readOnly && !isDiff ? [EditorState.readOnly.of(true)] : []),
       ...(languageExtension ? [languageExtension] : []),
     ];
   }, [filePath, isDarkMode, readOnly, isDiff, wordWrap]);