diff --git a/content_scripts/mode_insert.js b/content_scripts/mode_insert.js
index 824369339..5214eefb6 100644
--- a/content_scripts/mode_insert.js
+++ b/content_scripts/mode_insert.js
@@ -49,7 +49,9 @@ class InsertMode extends Mode {
 
         if (!this.permanent) {
           this.exit();
+          return this.suppressEvent;
         }
+        return this.passEventToPage;
       } else {
         return this.passEventToPage;
       }