diff --git a/src/ifccsv/ifccsv.py b/src/ifccsv/ifccsv.py
index 88541f1e2a..076e54d5c3 100755
--- a/src/ifccsv/ifccsv.py
+++ b/src/ifccsv/ifccsv.py
@@ -490,8 +490,8 @@ class IfcCsv:
         concat: str,
     ) -> None:
         # Patterns to skip during import (substrings)
-        SKIP_PATTERNS = {'count', 'material'}
-        
+        SKIP_PATTERNS = {"count", "material"}
+
         try:
             element = ifc_file.by_guid(row[0])
         except:
@@ -509,11 +509,11 @@ class IfcCsv:
             elif value == bool_false:
                 value = False
             key = attributes[i] or headers[i]
-            
+
             # Skip keys containing certain patterns
             if any(pattern in key.lower() for pattern in SKIP_PATTERNS):
                 continue
-                
+
             ifcopenshell.util.selector.set_element_value(ifc_file, element, key, value, concat=concat)