diff --git a/irradpy/downloader/download.py b/irradpy/downloader/download.py
index a6b065c..0129db5 100644
--- a/irradpy/downloader/download.py
+++ b/irradpy/downloader/download.py
@@ -642,7 +642,7 @@ def daily_download_and_convert(
                 if not merra2_var_dicts:
                     merra2_var_dict = var_list[collection_name]
                 else:
-                    merra2_var_dict = merra2_var_dicts[i]
+                    merra2_var_dict = merra2_var_dicts[collection_name]
                 # Download subdaily files
                 # Translate the coordinates that define your area to grid coordinates.
                 lat_coord_1 = self.translate_lat_to_geos5_native(lat_1)