diff --git a/litedram/core/crossbar.py b/litedram/core/crossbar.py
index 30cb57f..04b0bba 100644
--- a/litedram/core/crossbar.py
+++ b/litedram/core/crossbar.py
@@ -14,7 +14,7 @@ from litedram.frontend.adaptation import *
 
 
 class LiteDRAMCrossbar(Module):
-    def __init__(self, controller, ):
+    def __init__(self, controller):
         self.controller = controller
 
         self.rca_bits = controller.address_width