diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c
index eb8f686d..06a48f4c 100644
--- a/src/pcm/pcm.c
+++ b/src/pcm/pcm.c
@@ -2763,6 +2763,7 @@ int snd_pcm_new(snd_pcm_t **pcmp, snd_pcm_type_t type, const char *name,
 	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
 #endif
 	pthread_mutex_init(&pcm->lock, &attr);
+	pthread_mutexattr_destroy(&attr);
 	/* use locking as default;
 	 * each plugin may suppress this in its open call
 	 */