diff --git a/headers/posix/netinet/in.h b/headers/posix/netinet/in.h
index 1362259613..0e16b70f1f 100644
--- a/headers/posix/netinet/in.h
+++ b/headers/posix/netinet/in.h
@@ -26,22 +26,21 @@ typedef uint32_t in_addr_t;
  * and we are not allowed to import all the BeOS types here.
  */
 #ifndef htonl
-/*	extern uint32_t __swap_int32(uint32_t); */	/* private */
 	extern unsigned long __swap_int32(unsigned long);	/* private */
 	extern uint16_t __swap_int16(uint16_t);	/* private */
-	#if 	BYTE_ORDER == LITTLE_ENDIAN
-		#define htonl(x) __swap_int32(x)
-		#define ntohl(x) __swap_int32(x)
-		#define htons(x) __swap_int16(x)
-		#define ntohs(x) __swap_int16(x)
-	#elif	BYTE_ORDER == BIG_ENDIAN
-		#define htonl(x) (x)
-		#define ntohl(x) (x)
-		#define htons(x) (x)
-		#define ntohs(x) (x)
-	#else
-		#error Unknown byte order.
-	#endif
+#	if BYTE_ORDER == LITTLE_ENDIAN
+#		define htonl(x) ((uint32_t)__swap_int32(x))
+#		define ntohl(x) ((uint32_t)__swap_int32(x))
+#		define htons(x) __swap_int16(x)
+#		define ntohs(x) __swap_int16(x)
+#	elif BYTE_ORDER == BIG_ENDIAN
+#		define htonl(x) (x)
+#		define ntohl(x) (x)
+#		define htons(x) (x)
+#		define ntohs(x) (x)
+#	else
+#		error Unknown byte order.
+#	endif
 #endif