diff --git a/js/gdm/authPrompt.js b/js/gdm/authPrompt.js
index 1e51faa5c..26a4e2c2d 100644
--- a/js/gdm/authPrompt.js
+++ b/js/gdm/authPrompt.js
@@ -261,6 +261,7 @@ const AuthPrompt = new Lang.Class({
 
     _onVerificationComplete: function() {
         this.verificationStatus = AuthPromptStatus.VERIFICATION_SUCCEEDED;
+	this.cancelButton.reactive = false;
     },
 
     _onReset: function() {
@@ -432,6 +433,7 @@ const AuthPrompt = new Lang.Class({
     reset: function() {
         let oldStatus = this.verificationStatus;
         this.verificationStatus = AuthPromptStatus.NOT_VERIFYING;
+        this.cancelButton.reactive = true;
 
         if (oldStatus == AuthPromptStatus.VERIFYING)
             this._userVerifier.cancel();
@@ -500,6 +502,9 @@ const AuthPrompt = new Lang.Class({
     },
 
     cancel: function() {
+        if (this.verificationStatus == AuthPromptStatus.NOT_VERIFYING || this.verificationStatus == AuthPromptStatus.VERIFICATION_SUCCEEDED) {
+            return;
+        }
         this.reset();
         this.emit('cancelled');
     }