diff --git a/scripts/build_industry_sector_ratios_intermediate.py b/scripts/build_industry_sector_ratios_intermediate.py
index d4d46c39..0fbaa567 100644
--- a/scripts/build_industry_sector_ratios_intermediate.py
+++ b/scripts/build_industry_sector_ratios_intermediate.py
@@ -79,8 +79,8 @@ with the following carriers are considered:
 Unit of the output file is MWh/t.
 """
 
-import pandas as pd
 import numpy as np
+import pandas as pd
 from prepare_sector_network import get