diff --git a/src/python/dm/common/utility/osUtility.py b/src/python/dm/common/utility/osUtility.py
index 9f9ac57e6840479451f0ea0d5264397dee9c3fdd..41f532f9681b102e61ce35ff74a606fa672fc35e 100755
--- a/src/python/dm/common/utility/osUtility.py
+++ b/src/python/dm/common/utility/osUtility.py
@@ -86,7 +86,7 @@ class OsUtility:
                 if os.path.isfile(fullPath):
                     fList.append(fullPath)
                 elif os.path.isdir(fullPath):
-                    fList = findFiles(fullPath, fList)
+                    fList = cls.findFiles(fullPath, fList)
         return fList
 
     @classmethod