1 files changed, 1 insertions, 0 deletions
diff --git a/messagepump.c b/messagepump.c
index 9967a8dc..abdcb390 100644
--- a/messagepump.c
+++ b/messagepump.c
@@ -31,6 +31,7 @@ void
 messagepump_free () {
     mutex_lock (mutex);
     messagepump_reset ();
+    mutex_unlock (mutex);
     mutex_free (mutex);
 }