diff --git a/lib/index.js b/lib/index.js
index 8b3e0bc..1166199 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -23,7 +23,7 @@ var bluetest = module.exports = function(options) {
 
   core.connectGatt = function() {
     logger.info('trying to connect using gatttool');
-    var gatt = spawn('gatttool -I');
+    var gatt = spawn('gatttool',['-I']);
     gatt.on('error', function(err) {
       logger.error(err);
     });