diff --git a/power_fv/core/__init__.py b/power_fv/core/__init__.py
index 1b926b0..6eb5851 100644
--- a/power_fv/core/__init__.py
+++ b/power_fv/core/__init__.py
@@ -43,7 +43,7 @@ class PowerFVCore:
         pass
 
     @classmethod
-    def add_files(cls, platform, wrapper, *, src_dir, **kwargs):
+    def add_files(cls, platform, wrapper, **kwargs):
         """Add source files to the build plan.
 
         Parameters