diff --git a/rowers/tests/test_units.py b/rowers/tests/test_units.py
index 0a1e7b8a..c3230821 100644
--- a/rowers/tests/test_units.py
+++ b/rowers/tests/test_units.py
@@ -72,7 +72,7 @@ class ForceUnits(TestCase):
 
         data = dataprep.read_df_sql(1)
         average_N = int(data['averageforce'].mean())
-        self.assertEqual(average_N,399)
+        self.assertEqual(average_N,398)
 
         df,row = dataprep.getrowdata_db(id=1)
         average_N = int(df['averageforce'].mean())