diff --git a/addons/httprox/common/src/main/java/org/commonjava/indy/httprox/handler/ProxyResponseWriter.java b/addons/httprox/common/src/main/java/org/commonjava/indy/httprox/handler/ProxyResponseWriter.java
index 40e4737dd4..c4b4e8f703 100644
--- a/addons/httprox/common/src/main/java/org/commonjava/indy/httprox/handler/ProxyResponseWriter.java
+++ b/addons/httprox/common/src/main/java/org/commonjava/indy/httprox/handler/ProxyResponseWriter.java
@@ -268,7 +268,7 @@ private void doHandleEvent( final ConduitStreamSinkChannel sinkChannel )
                                      PROXY_AUTHENTICATION_REQUIRED, proxy_authenticate, realmInfo );
 
                         http.writeStatus( PROXY_AUTHENTICATION_REQUIRED );
-                        http.writeHeader( proxy_authenticate, realmInfo );
+                        http.writeHeader( proxy_authenticate, String.format( "%s\n", realmInfo ) );
                     }
                     else
                     {