diff --git a/scripts/launch_cluster.js b/scripts/launch_cluster.js
index cd4d67c3cc..705f1abb70 100644
--- a/scripts/launch_cluster.js
+++ b/scripts/launch_cluster.js
@@ -26,6 +26,6 @@ function main (argv) {
   }
   var l = r.runInfo[j];
   for (i = 0;i < l.endpoints.length;i++) {
-    print("  " + l.roles[i] + ":" + l.endpoints[i]);
+    print("  " + l.roles[i] + ": " + l.endpoints[i]);
   }
 }
diff --git a/scripts/relaunch_cluster.js b/scripts/relaunch_cluster.js
index 8fb7001ab7..7632263236 100644
--- a/scripts/relaunch_cluster.js
+++ b/scripts/relaunch_cluster.js
@@ -21,6 +21,6 @@ function main (argv) {
   }
   var l = r.runInfo[j];
   for (i = 0;i < l.endpoints.length;i++) {
-    print("  " + l.roles[i] + ":" + l.endpoints[i]);
+    print("  " + l.roles[i] + ": " + l.endpoints[i]);
   }
 }