diff --git a/rhodecode/lib/dbmigrate/migrate/versioning/schemadiff.py b/rhodecode/lib/dbmigrate/migrate/versioning/schemadiff.py
--- a/rhodecode/lib/dbmigrate/migrate/versioning/schemadiff.py
+++ b/rhodecode/lib/dbmigrate/migrate/versioning/schemadiff.py
@@ -39,7 +39,7 @@ def getDiffOfModelAgainstModel(metadataA
     :return: object which will evaluate to :keyword:`True` if there \
       are differences else :keyword:`False`.
     """
-    return SchemaDiff(metadataA, metadataB, excludeTables)
+    return SchemaDiff(metadataA, metadataB, excludeTables=excludeTables)
 
 
 class ColDiff(object):