1 files changed, 2 insertions, 2 deletions
diff --git a/mutex.h b/mutex.h
index 56f8a42..b0182a2 100644
--- a/mutex.h
+++ b/mutex.h
@@ -44,12 +44,12 @@ inline int mutex_init(uint32_t *futex) {
 inline void mutex_lock(uint32_t *futex) {
 	uint32_t val;
 	while ((val = __sync_lock_test_and_set(futex, 1)))
-		syscall(SYS_futex, futex, FUTEX_WAIT, val, 0, 0, 0);
+		syscall(SYS_futex, futex, FUTEX_PRIVATE_FLAG | FUTEX_WAIT, val, 0, 0, 0);
 }
 
 inline void mutex_unlock(uint32_t *futex) {
 	__sync_lock_release(futex);
-	syscall(SYS_futex, futex, FUTEX_WAKE, 1, 0, 0, 0);
+	syscall(SYS_futex, futex, FUTEX_PRIVATE_FLAG | FUTEX_WAKE, 1, 0, 0, 0);
 }
 
 inline void mutex_destroy(uint32_t *futex) {