diff --git a/lib/libcompiler_rt/__sync_fetch_and_op_n.h b/lib/libcompiler_rt/__sync_fetch_and_op_n.h
index 994e271ed088..524c1cffd24b 100644
--- a/lib/libcompiler_rt/__sync_fetch_and_op_n.h
+++ b/lib/libcompiler_rt/__sync_fetch_and_op_n.h
@@ -30,7 +30,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/types.h>
 #include <machine/atomic.h>
 
-#if defined __clang__
+#ifdef __clang__
 static TYPE
 atomic_func(volatile TYPE *ptr, TYPE value, ...)
 #else
diff --git a/lib/libcompiler_rt/__sync_val_compare_and_swap_n.h b/lib/libcompiler_rt/__sync_val_compare_and_swap_n.h
index ee9d02578397..b6017c9cae88 100644
--- a/lib/libcompiler_rt/__sync_val_compare_and_swap_n.h
+++ b/lib/libcompiler_rt/__sync_val_compare_and_swap_n.h
@@ -30,7 +30,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/types.h>
 #include <machine/atomic.h>
 
-#if defined __clang__
+#ifdef __clang__
 static TYPE
 atomic_func(volatile TYPE *ptr, TYPE oldval, TYPE newval, ...)
 #else