diff --git a/scripts/config.sh b/scripts/config.sh
index ec39054..7d54924 100755
--- a/scripts/config.sh
+++ b/scripts/config.sh
@@ -29,7 +29,7 @@ config_set_all()
         chain_name="crust-node"
     fi
     local tt=$(rand 100000 999999)
-    chain_name=$chain_name$tt
+    chain_name="$chain_name-$tt"
     sed -i "22c \\  name: \"$chain_name\"" $configfile &>/dev/null
     log_success "Set crust node name: '$chain_name' successfully"