diff --git a/cmd/zed/agents/zfs_mod.c b/cmd/zed/agents/zfs_mod.c
index 8575d98316..d4d7a99800 100644
--- a/cmd/zed/agents/zfs_mod.c
+++ b/cmd/zed/agents/zfs_mod.c
@@ -964,7 +964,7 @@ zfsdle_vdev_online(zpool_handle_t *zhp, void *data)
 	nvlist_t *tgt;
 	int error;
 
-	char *tmp_devname, devname[MAXPATHLEN];
+	char *tmp_devname, devname[MAXPATHLEN] = "";
 	uint64_t guid;
 
 	if (nvlist_lookup_uint64(udev_nvl, ZFS_EV_VDEV_GUID, &guid) == 0) {