diff --git a/app/assets/javascripts/posts.js b/app/assets/javascripts/posts.js
index 77434e33f..caf2f54b1 100644
--- a/app/assets/javascripts/posts.js
+++ b/app/assets/javascripts/posts.js
@@ -73,6 +73,7 @@
         var before_caret_text = req.term.substring(0, this.element.get(0).selectionStart);
 
         if (before_caret_text.match(/ $/)) {
+          this.close();
           return;
         }