diff --git a/src/xpdev/rwlockwrap.c b/src/xpdev/rwlockwrap.c
index 85f60782c958c66cb2e24efa0b0e3baadea13a56..cdd8f40a37e7d4d75e856c3f3fdb2a3104824286 100644
--- a/src/xpdev/rwlockwrap.c
+++ b/src/xpdev/rwlockwrap.c
@@ -15,7 +15,7 @@ rwlock_init(rwlock_t *lock)
 	lock->writers = 0;
 	lock->writers_waiting = 0;
 	lock->writer = (DWORD)-1;
-	return true;
+	return TRUE;
 }
 
 BOOL