diff --git a/tests/testutil.py b/tests/testutil.py
index b5eea67bddb665e7838ce03c1811fc3ef43df653..f9049344533c4d8082904ebeb22d7b70dc0b2b9f 100644
--- a/tests/testutil.py
+++ b/tests/testutil.py
@@ -217,7 +217,7 @@ class TestBooksLoader(books.Loader):
     def __init__(self, source):
         self.source = source
 
-    def load_all(self):
+    def load_all(self, from_year=None):
         return bc_loader.load_file(self.source)
 
     def load_fy_range(self, from_fy, to_fy=None):