diff --git a/smack-core/src/main/java/org/jivesoftware/smack/proxy/HTTPProxySocketConnection.java b/smack-core/src/main/java/org/jivesoftware/smack/proxy/HTTPProxySocketConnection.java
index 6326cf1db..549406423 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/proxy/HTTPProxySocketConnection.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/proxy/HTTPProxySocketConnection.java
@@ -115,7 +115,8 @@ class HTTPProxySocketConnection implements ProxySocketConnection {
         int code = Integer.parseInt(m.group(1));
 
         if (code != HttpURLConnection.HTTP_OK) {
-            throw new ProxyException(ProxyInfo.ProxyType.HTTP);
+            throw new ProxyException(ProxyInfo.ProxyType.HTTP,
+                "Error code in proxy response: " + code);
         }
     }