diff --git a/packages/extension-mention/src/mention.ts b/packages/extension-mention/src/mention.ts
index 0189b5f9..75dd7d9f 100644
--- a/packages/extension-mention/src/mention.ts
+++ b/packages/extension-mention/src/mention.ts
@@ -26,6 +26,17 @@ export const Mention = Node.create<MentionOptions>({
       char: '@',
       pluginKey: MentionPluginKey,
       command: ({ editor, range, props }) => {
+        // increase range.to by one when the next node is of type "text"
+        // and starts with a space character
+        const nodeAfter = editor.view.state.selection.$to.nodeAfter
+        const overrideSpace = nodeAfter?.text
+          ? /^\s/.test(nodeAfter.text)
+          : false
+
+        if (overrideSpace) {
+          range.to += 1
+        }
+
         editor
           .chain()
           .focus()