diff --git a/test/test_reformatted_for_agg.py b/test/test_reformatted_for_agg.py
index e5532614..b1314a18 100644
--- a/test/test_reformatted_for_agg.py
+++ b/test/test_reformatted_for_agg.py
@@ -6,6 +6,7 @@
 from metcalcpy.util.read_env_vars_in_config import parse_config
 
 cwd = os.path.dirname(__file__)
+os.environ['TEST_DIR'] = cwd
 
 def test_reformatted_input():
     '''