diff --git a/lib/zigbee.js b/lib/zigbee.js
index c71e24f0..710fe34d 100644
--- a/lib/zigbee.js
+++ b/lib/zigbee.js
@@ -146,7 +146,7 @@ class Zigbee {
                 });
             } else {
                 logger.debug(`Coordinator is already in group '${groupID}'`);
-                callback(true);
+                callback(false);
             }
         });
     }