1 files changed, 1 insertions, 1 deletions
diff --git a/Swiften/Network/NullNATTraversalInterface.h b/Swiften/Network/NullNATTraversalInterface.h
index ecbf110..eabc197 100644
--- a/Swiften/Network/NullNATTraversalInterface.h
+++ b/Swiften/Network/NullNATTraversalInterface.h
@@ -15,18 +15,18 @@ namespace Swift {
         public:
             virtual bool isAvailable() {
                 return true;
             }
 
             virtual boost::optional<HostAddress> getPublicIP() {
                 return boost::optional<HostAddress>();
             }
 
-            virtual boost::optional<NATPortMapping> addPortForward(int, int) {
+            virtual boost::optional<NATPortMapping> addPortForward(unsigned short, unsigned short) {
                 return boost::optional<NATPortMapping>();
             }
 
             virtual bool removePortForward(const NATPortMapping&) {
                 return false;
             }
     };
 }