diff --git a/toxav/codec.c b/toxav/codec.c
index 2b892be7..2c15cb4d 100644
--- a/toxav/codec.c
+++ b/toxav/codec.c
@@ -482,6 +482,7 @@ CSSession *cs_new(const ToxAvCSettings *cs_self, const ToxAvCSettings *cs_peer,
 
     if (create_recursive_mutex(cs->queue_mutex) != 0) {
         LOGGER_WARNING("Failed to create recursive mutex!");
+        free(cs);
         return NULL;
     }
 
@@ -673,4 +674,4 @@ void queue_message(RTPSession *session, RTPMessage *msg)
 end:
         rtp_free_msg(NULL, msg);
     }
-}
\ No newline at end of file
+}