diff --git a/methods.py b/methods.py
index 46b58a13cde..dee79390464 100644
--- a/methods.py
+++ b/methods.py
@@ -155,7 +155,7 @@ def detect_modules(at_path):
 
 
 def is_module(path):
-    return os.path.isdir(path) and os.path.exists(path + "/config.py")
+    return os.path.isdir(path) and os.path.exists(os.path.join(path, "SCsub"))
 
 
 def write_modules(module_list):