diff --git a/src/bonsai/test/bim/test_feature.py b/src/bonsai/test/bim/test_feature.py
index 39a4d7710a..ff96aa6562 100644
--- a/src/bonsai/test/bim/test_feature.py
+++ b/src/bonsai/test/bim/test_feature.py
@@ -979,6 +979,7 @@ def i_click_button_and_expect_error_error_msg(button, error_msg):
 
 @given(parsers.parse('I evaluate expression "{expression}"'))
 @when(parsers.parse('I evaluate expression "{expression}"'))
+@then(parsers.parse('I evaluate expression "{expression}"'))
 def i_evaluate_expression(expression):
     expression = replace_variables(expression)
     exec(expression)