diff --git a/sys/dev/axgbe/xgbe_osdep.h b/sys/dev/axgbe/xgbe_osdep.h
--- a/sys/dev/axgbe/xgbe_osdep.h
+++ b/sys/dev/axgbe/xgbe_osdep.h
@@ -232,13 +232,6 @@
         return (ffsl(mask) - 1);
 }
 
-static inline int
-fls64(uint64_t mask)
-{
-
-	return (flsll(mask));
-}
-
 static inline int
 get_bitmask_order(unsigned int count)
 {