--- a/browser/extensions/formautofill/FormAutofillContent.jsm
+++ b/browser/extensions/formautofill/FormAutofillContent.jsm
@@ -539,17 +539,16 @@ var FormAutofillContent = {
       });
 
       ProfileAutocomplete._previewSelectedProfile(selectedIndex);
     }
   },
 
   onPopupClosed() {
     ProfileAutocomplete._clearProfilePreview();
-    ProfileAutocomplete.lastProfileAutoCompleteResult = null;
   },
 
   _markAsAutofillField(field) {
     // Since Form Autofill popup is only for input element, any non-Input
     // element should be excluded here.
     if (!field || !(field instanceof Ci.nsIDOMHTMLInputElement)) {
       return;
     }