diff --git a/kernel/fork.c b/kernel/fork.c
index 5615ead014e346ddaa2d8f4b9d722c693bb77185..01ccc610991855144fafff82340ffc0af5c02bba 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1654,7 +1654,7 @@ SYSCALL_DEFINE0(fork)
 	return do_fork(SIGCHLD, 0, 0, NULL, NULL);
 #else
 	/* can not support in nommu mode */
-	return(-EINVAL);
+	return -EINVAL;
 #endif
 }
 #endif
@@ -1662,7 +1662,7 @@ SYSCALL_DEFINE0(fork)
 #ifdef __ARCH_WANT_SYS_VFORK
 SYSCALL_DEFINE0(vfork)
 {
-	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, 
+	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
 			0, NULL, NULL);
 }
 #endif