diff --git a/src/Mayaqua/Unix.c b/src/Mayaqua/Unix.c
index 37ac877d..0f1428f3 100755
--- a/src/Mayaqua/Unix.c
+++ b/src/Mayaqua/Unix.c
@@ -1840,6 +1840,10 @@ LOCK *UnixNewLock()
 
 	// Create a mutex
 	mutex = UnixMemoryAlloc(sizeof(pthread_mutex_t));
+	if (mutex == NULL)
+	{
+		return NULL;
+	}
 
 	// Initialization of the mutex
 	pthread_mutex_init(mutex, NULL);