diff --git a/src/blenderbim/test/bim/feature/debug.feature b/src/blenderbim/test/bim/feature/debug.feature
index 7e330c47d5..6d0bb55bf9 100644
--- a/src/blenderbim/test/bim/feature/debug.feature
+++ b/src/blenderbim/test/bim/feature/debug.feature
@@ -10,6 +10,7 @@ Scenario: Parse express
     Given an empty Blender session
     And I press "bim.select_express_file(filepath='{cwd}/test/files/test.exp')"
     When I press "bim.parse_express"
+    And I evaluate expression "os.remove('{cwd}/test/files/test.exp.cache.dat')"
     Then nothing happens
 
 Scenario: Use the inspector - inspect from STEP ID
diff --git a/src/blenderbim/test/bim/test_feature.py b/src/blenderbim/test/bim/test_feature.py
index a59af93edd..858daf0f21 100644
--- a/src/blenderbim/test/bim/test_feature.py
+++ b/src/blenderbim/test/bim/test_feature.py
@@ -173,6 +173,13 @@ def i_press_operator(operator):
         exec(f"bpy.ops.{operator}()")
 
 
+@given(parsers.parse('I evaluate expression "{expression}"'))
+@when(parsers.parse('I evaluate expression "{expression}"'))
+def i_evaluate_expression(expression):
+    expression = replace_variables(expression)
+    exec(expression)
+
+
 @when("I duplicate the selected objects")
 def i_duplicate_the_selected_objects():
     bpy.ops.object.duplicate_move()