diff --git a/site/src/modules/templates/TemplateFiles/TemplateFiles.tsx b/site/src/modules/templates/TemplateFiles/TemplateFiles.tsx
index fcbd30b78fea6..d9b4baf289faa 100644
--- a/site/src/modules/templates/TemplateFiles/TemplateFiles.tsx
+++ b/site/src/modules/templates/TemplateFiles/TemplateFiles.tsx
@@ -42,7 +42,7 @@ export const TemplateFiles: FC<TemplateFilesProps> = ({
   const fileInfo = useCallback(
     (filename: string) => {
       const value = currentFiles[filename].trim();
-      const previousValue = baseFiles ? baseFiles[filename].trim() : undefined;
+      const previousValue = baseFiles ? baseFiles[filename]?.trim() : undefined;
       const hasDiff = previousValue && value !== previousValue;
 
       return {