diff --git a/naturf/nodes.py b/naturf/nodes.py
index 2a483e29c8..a2d0c7f0f9 100755
--- a/naturf/nodes.py
+++ b/naturf/nodes.py
@@ -616,15 +616,13 @@ def frontal_area(frontal_length: pd.DataFrame, building_height: pd.Series) -> pd
 
     frontal_area = frontal_length.mul(building_height, axis=0)
 
-    cols = [
+    frontal_area.columns = [
         frontal_area_north,
         frontal_area_east,
         frontal_area_south,
         frontal_area_west,
     ]
 
-    frontal_area.columns = cols
-
     return frontal_area