diff --git a/src/util/virnetdev.c b/src/util/virnetdev.c
index 6da3371d55..3831009d87 100644
--- a/src/util/virnetdev.c
+++ b/src/util/virnetdev.c
@@ -52,6 +52,10 @@
 # include <net/if_dl.h>
 #endif
 
+#ifndef IFNAMSIZ
+# define IFNAMSIZ 16
+#endif
+
 #define VIR_FROM_THIS VIR_FROM_NONE
 
 VIR_LOG_INIT("util.netdev");