diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 73959dab4a10c7c7aea8ca8d97681f0a7ecfe86a..323957e2858de2a4582ddd96a70b62feaba82abd 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -10516,6 +10516,7 @@ qemuDomainGetBlockInfo(virDomainPtr dom,
     }
 
  cleanup:
+    VIR_FREE(buf);
     VIR_FREE(alias);
     virStorageSourceFree(meta);
     VIR_FORCE_CLOSE(fd);