diff --git a/ADASMELIAE.py b/ADASMELIAE.py
index 67bfed5a6f57b29bd66fd85dea4dd0719af58cc8..f7f95b1913305ef50b87c82213d6213b61588bcc 100755
--- a/ADASMELIAE.py
+++ b/ADASMELIAE.py
@@ -181,7 +181,7 @@ def create_mapfile(timestep_dates):
             "language_codes": language_codes,
         }
     )
-    with open(f"{result_mapfile_year_dir}/{model_id}.map", "w") as f:
+    with open(f"{result_mapfile_year_dir}{model_id}.map", "w") as f:
         f.write(output)