diff --git a/tests/units/test_units.py b/tests/units/test_units.py
index 9f37bff2272..0d862b5ea7a 100644
--- a/tests/units/test_units.py
+++ b/tests/units/test_units.py
@@ -176,7 +176,7 @@ def test_added_degrees_units():
     assert units('degrees_north').to_base_units().units == units.radian
     assert units('degrees_east') == units('degrees')
     assert units('degrees_east').to_base_units().units == units.radian
-    assert units("dBZ") == units("dB")
+    assert units('dBZ') == units('dB')
 
 
 def test_is_quantity():