diff --git a/dev b/dev
index c6a3aaf21..9f2b9450e 100755
--- a/dev
+++ b/dev
@@ -416,7 +416,7 @@ boot() {
 gen_tmp_node_name() {
     local rnd
     rnd="$(od -t u -N 4 /dev/urandom | head -n1 | awk '{print $2 % 1000}')"
-    echo "remsh${rnd}-$EMQX_NODE_NAME}"
+    echo "remsh${rnd}-${EMQX_NODE_NAME}"
 }
 
 remsh() {