diff --git a/packages/editor/src/core/extensions/mentions/extension.tsx b/packages/editor/src/core/extensions/mentions/extension.tsx
index fb920546934..96001cbea15 100644
--- a/packages/editor/src/core/extensions/mentions/extension.tsx
+++ b/packages/editor/src/core/extensions/mentions/extension.tsx
@@ -30,6 +30,7 @@ export function CustomMentionExtension(props: TMentionHandler) {
       render: renderMentionsDropdown({
         searchCallback,
       }),
+      allowSpaces: true,
     },
   });
 }