diff --git a/monitor.c b/monitor.c
index aac88781cc6680aac3f11e71c72b1d6a73557fb2..4b270d98f67e95cb235346dd54e86398f331fe3c 100644
--- a/monitor.c
+++ b/monitor.c
@@ -259,7 +259,7 @@ static void do_commit(Monitor *mon, const char *device)
     all_devices = !strcmp(device, "all");
     TAILQ_FOREACH(dinfo, &drives, next) {
         if (!all_devices)
-            if (!strcmp(bdrv_get_device_name(dinfo->bdrv), device))
+            if (strcmp(bdrv_get_device_name(dinfo->bdrv), device))
                 continue;
         bdrv_commit(dinfo->bdrv);
     }