diff --git a/TODO b/TODO
index 73e9b7de9..b4f7dce9f 100644
--- a/TODO
+++ b/TODO
@@ -66,3 +66,4 @@ rc8->rc9 changelog:
 - BUGFIX: Fixed possible overflow in ETA calculation
 - BUGFIX: title bar is now reset when "Display speed in title" is disabled
 - BUGFIX: Fixed HTTP_PW and SOCKS5_PW in proxy combobox
+- BUGFIX: Fixed proxy auth disable problem when disabling proxy
diff --git a/src/options_imp.cpp b/src/options_imp.cpp
index b26eb0acc..96ac8d95e 100644
--- a/src/options_imp.cpp
+++ b/src/options_imp.cpp
@@ -871,6 +871,7 @@ void options_imp::enableProxy(int index){
     textProxyIP->setEnabled(false);
     lblProxyPort->setEnabled(false);
     spinProxyPort->setEnabled(false);
+    checkProxyAuth->setChecked(false);
     checkProxyAuth->setEnabled(false);
     ProxyConnecsBox->setEnabled(false);
   }