diff --git a/src/network/access/qhttpthreaddelegate.cpp b/src/network/access/qhttpthreaddelegate.cpp
index 5cf153325b..3901635ca0 100644
--- a/src/network/access/qhttpthreaddelegate.cpp
+++ b/src/network/access/qhttpthreaddelegate.cpp
@@ -560,7 +560,8 @@ void QHttpThreadDelegate::synchronousAuthenticationRequiredSlot(const QHttpNetwo
     }
 
     // Disconnect this connection now since we only want to ask the authentication cache once.
-    QObject::disconnect(this, SLOT(synchronousAuthenticationRequiredSlot(QHttpNetworkRequest,QAuthenticator*)));
+    QObject::disconnect(httpReply, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)),
+        this, SLOT(synchronousAuthenticationRequiredSlot(QHttpNetworkRequest,QAuthenticator*)));
 }
 
 #ifndef QT_NO_NETWORKPROXY
@@ -577,7 +578,8 @@ void  QHttpThreadDelegate::synchronousProxyAuthenticationRequiredSlot(const QNet
     }
 
     // Disconnect this connection now since we only want to ask the authentication cache once.
-    QObject::disconnect(this, SLOT(synchronousProxyAuthenticationRequiredSlot(QNetworkProxy,QAuthenticator*)));
+    QObject::disconnect(httpReply, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
+        this, SLOT(synchronousProxyAuthenticationRequiredSlot(QNetworkProxy,QAuthenticator*)));
 }
 
 #endif