diff --git a/libc/kernel/uapi/linux/in.h b/libc/kernel/uapi/linux/in.h
index 78bd72a..9ed00b4 100644
--- a/libc/kernel/uapi/linux/in.h
+++ b/libc/kernel/uapi/linux/in.h
@@ -201,7 +201,7 @@
 #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
 #define IN_MULTICAST(a) IN_CLASSD(a)
 #define IN_MULTICAST_NET 0xe0000000
-#define IN_BADCLASS(a) (((long int) (a)) == (long int)0xffffffff)
+#define IN_BADCLASS(a) (((long int) (a)) == (long int) 0xffffffff)
 #define IN_EXPERIMENTAL(a) IN_BADCLASS((a))
 #define IN_CLASSE(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
 #define IN_CLASSE_NET 0xffffffff