diff --git a/remoting/host/disconnect_window_mac.mm b/remoting/host/disconnect_window_mac.mm
index 1312b1166d85e0..0743c1bafc455b 100644
--- a/remoting/host/disconnect_window_mac.mm
+++ b/remoting/host/disconnect_window_mac.mm
@@ -71,6 +71,11 @@ @implementation DisconnectWindowController
 @synthesize disconnectWindow = disconnectWindow_;
 @synthesize username = username_;
 
+- (void)close {
+  self.host = NULL;
+  [super close];
+}
+
 - (id)initWithHost:(remoting::ChromotingHost*)host
             window:(remoting::DisconnectWindowMac*)disconnectWindow
           username:(NSString*)username {