diff --git a/SafeExamBrowser.Client/ClientController.cs b/SafeExamBrowser.Client/ClientController.cs
index f9ea4e44..d5573a5d 100644
--- a/SafeExamBrowser.Client/ClientController.cs
+++ b/SafeExamBrowser.Client/ClientController.cs
@@ -188,7 +188,7 @@ namespace SafeExamBrowser.Client
 			Browser.ConfigurationDownloadRequested += Browser_ConfigurationDownloadRequested;
 			Browser.SessionIdentifierDetected += Browser_SessionIdentifierDetected;
 			Browser.TerminationRequested += Browser_TerminationRequested;
-			Browser.LoseFocusRequested += Browser_LoseFocusRequested; ;
+			Browser.LoseFocusRequested += Browser_LoseFocusRequested;
 			ClientHost.ExamSelectionRequested += ClientHost_ExamSelectionRequested;
 			ClientHost.MessageBoxRequested += ClientHost_MessageBoxRequested;
 			ClientHost.PasswordRequested += ClientHost_PasswordRequested;
@@ -238,6 +238,7 @@ namespace SafeExamBrowser.Client
 				Browser.ConfigurationDownloadRequested -= Browser_ConfigurationDownloadRequested;
 				Browser.SessionIdentifierDetected -= Browser_SessionIdentifierDetected;
 				Browser.TerminationRequested -= Browser_TerminationRequested;
+				Browser.LoseFocusRequested -= Browser_LoseFocusRequested;
 			}
 
 			if (ClientHost != null)