diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 3b33e37bb3..132ee664ad 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -407,6 +407,7 @@ static void virQEMUDriverConfigDispose(void *obj)
 
     VIR_FREE(cfg->saveImageFormat);
     VIR_FREE(cfg->dumpImageFormat);
+    VIR_FREE(cfg->snapshotImageFormat);
     VIR_FREE(cfg->autoDumpPath);
 
     virStringListFree(cfg->securityDriverNames);