diff --git a/mysys/my_gethwaddr.c b/mysys/my_gethwaddr.c
index db026c13700..c7aa7f17f1d 100644
--- a/mysys/my_gethwaddr.c
+++ b/mysys/my_gethwaddr.c
@@ -72,7 +72,7 @@ err:
   return res;
 }
 
-#elif defined(__linux__) || defined(__sun__)
+#elif defined(__linux__) || defined(__sun)
 #include <net/if.h>
 #include <sys/ioctl.h>
 #include <net/if_arp.h>