diff --git a/src/os/darwin/darwin_sigar.c b/src/os/darwin/darwin_sigar.c
index 0096664c..ab184338 100644
--- a/src/os/darwin/darwin_sigar.c
+++ b/src/os/darwin/darwin_sigar.c
@@ -3340,8 +3340,10 @@ static char *get_hw_type(int type)
         return "vlan";
     case IFT_IEEE1394:
         return "firewire";
+#ifdef IFT_BRIDGE:
     case IFT_BRIDGE:
         return "bridge";
+#endif
     default:
         return "unknown";
     }