diff --git a/src/fccache.c b/src/fccache.c
index d8ffe09..4a6a752 100644
--- a/src/fccache.c
+++ b/src/fccache.c
@@ -495,6 +495,7 @@ retry:
     FcMutexInit (lock);
     if (!fc_atomic_ptr_cmpexch (&cache_lock, NULL, lock)) {
       FcMutexFinish (lock);
+      free (lock);
       goto retry;
     }