diff --git a/netwerk/base/src/nsSocketTransport2.cpp b/netwerk/base/src/nsSocketTransport2.cpp
index ca92f0e39041..3221301bf869 100644
--- a/netwerk/base/src/nsSocketTransport2.cpp
+++ b/netwerk/base/src/nsSocketTransport2.cpp
@@ -129,6 +129,7 @@ ErrorAccordingToNSPR(PRErrorCode errorCode)
         break;
     case PR_CONNECT_REFUSED_ERROR:
     case PR_NETWORK_UNREACHABLE_ERROR: // XXX need new nsresult for this!
+    case PR_HOST_UNREACHABLE_ERROR:    // XXX and this!
         rv = NS_ERROR_CONNECTION_REFUSED;
         break;
     case PR_IO_TIMEOUT_ERROR: