diff --git a/aiida_nanotech_empa/workflows/cp2k/fragment_separation.py b/aiida_nanotech_empa/workflows/cp2k/fragment_separation.py
index 431103a..b903e31 100644
--- a/aiida_nanotech_empa/workflows/cp2k/fragment_separation.py
+++ b/aiida_nanotech_empa/workflows/cp2k/fragment_separation.py
@@ -2,7 +2,7 @@
 
 from aiida import engine, orm, plugins
 
-from ...utils import string_utils, common_utils, split_structure
+from ...utils import common_utils, split_structure, string_utils
 from . import cp2k_utils
 
 StructureData = plugins.DataFactory("core.structure")