diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 86ed82f3de..85d0d0fb8c 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -199,6 +199,7 @@ static void qemuMonitorFree(qemuMonitorPtr mon)
     if (virCondDestroy(&mon->notify) < 0)
     {}
     virMutexDestroy(&mon->lock);
+    VIR_FREE(mon->buffer);
     VIR_FREE(mon);
 }