diff --git a/src/thread/pthread/SDL_sysmutex.c b/src/thread/pthread/SDL_sysmutex.c
index 3e04d2150c..7e03342322 100644
--- a/src/thread/pthread/SDL_sysmutex.c
+++ b/src/thread/pthread/SDL_sysmutex.c
@@ -46,6 +46,7 @@ SDL_Mutex *SDL_CreateMutex(void)
             SDL_free(mutex);
             mutex = NULL;
         }
+	    pthread_mutexattr_destroy(&attr);
     }
     return mutex;
 }