diff --git a/tests/bdd/steps/steps_osm_data.py b/tests/bdd/steps/steps_osm_data.py
index befc2a6f0..26eff1a27 100644
--- a/tests/bdd/steps/steps_osm_data.py
+++ b/tests/bdd/steps/steps_osm_data.py
@@ -31,6 +31,7 @@ def osm_define_node_grid(context, step, origin_x, origin_y):
 
 @given("the (?P<formatted>python-formatted )?OSM data")
 def osm_define_data(context, formatted):
+    context.import_file = None
     data = context.text
     if formatted:
         data = eval('f"""' + data + '"""')