--- a/src/devices/wifi/interference-helper.h	Mon Nov 30 19:25:04 2009 +0300
+++ b/src/devices/wifi/interference-helper.h	Mon Nov 30 18:20:30 2009 +0100
@@ -102,7 +102,7 @@
     NiChange (Time time, double delta);
     Time GetTime (void) const;
     double GetDelta (void) const;
-    bool operator < (NiChange const &o) const;
+    bool operator < (const NiChange& o) const;
   private:
     Time m_time;
     double m_delta;