diff --git a/lib/devices/android/adb.js b/lib/devices/android/adb.js
index 9ded8c6f5..297792f60 100644
--- a/lib/devices/android/adb.js
+++ b/lib/devices/android/adb.js
@@ -1100,8 +1100,8 @@ ADB.prototype.startApp = function (pkg, activity, waitPkg, waitActivity, retry,
         retry = false;
         return this.startApp(pkg, activity, waitPkg, waitActivity, retry, stopApp, cb);
       } else {
-        var msg = "Activity used to start app doesn't exist! Make sure " +
-                  "it exists";
+        var msg = "Activity used to start app doesn't exist or cannot be " +
+                  "launched! Make sure it exists and is a launchable activity";
         logger.error(msg);
         return cb(new Error(msg));
       }