diff --git a/sys/compat/linuxkpi/common/include/linux/etherdevice.h b/sys/compat/linuxkpi/common/include/linux/etherdevice.h
--- a/sys/compat/linuxkpi/common/include/linux/etherdevice.h
+++ b/sys/compat/linuxkpi/common/include/linux/etherdevice.h
@@ -53,7 +53,8 @@
 static inline bool
 is_zero_ether_addr(const u8 * addr)
 {
-	return ((addr[0] + addr[1] + addr[2] + addr[3] + addr[4] + addr[5]) == 0x00);
+	return ((addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]) ==
+	    0x00);
 }
 
 static inline bool
@@ -65,7 +66,8 @@
 static inline bool
 is_broadcast_ether_addr(const u8 * addr)
 {
-	return ((addr[0] + addr[1] + addr[2] + addr[3] + addr[4] + addr[5]) == (6 * 0xff));
+	return ((addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) ==
+	    0xff);
 }
 
 static inline bool