diff --git a/src/mesh/model/dot11s/ie-dot11s-beacon-timing.cc b/src/mesh/model/dot11s/ie-dot11s-beacon-timing.cc
index f86e4dfdc..886355795 100644
--- a/src/mesh/model/dot11s/ie-dot11s-beacon-timing.cc
+++ b/src/mesh/model/dot11s/ie-dot11s-beacon-timing.cc
@@ -206,7 +206,7 @@ IeBeaconTiming::operator== (WifiInformationElement const & a) const
         }
       return true;
     }
-  catch (std::bad_cast)
+  catch (std::bad_cast&)
     {
       return false;
     }