diff --git a/scripts/generate_modifications_cache.py b/scripts/generate_modifications_cache.py
index bbc0178..69140e8 100755
--- a/scripts/generate_modifications_cache.py
+++ b/scripts/generate_modifications_cache.py
@@ -8,7 +8,7 @@
 
 from Bio.Data import SCOPData
 
-VALID_RNA_CODES = set('ACGUT')
+VALID_RNA_CODES = set("ACGUT")
 
 # a few values are adjusted manually to make sure we are as correct as possible
 # and to avoid inconsistency with AlphaFold
@@ -106,7 +106,7 @@ def main(args):
 
     for k, v in modifications.items():
         if comp_types[k] == "protein":
-                data["protein"][k] = v
+            data["protein"][k] = v
         if comp_types[k] == "rna":
             if v in VALID_RNA_CODES:
                 data["rna"][k] = v
diff --git a/tests/test_modifications.py b/tests/test_modifications.py
index ff945ca..7e9270c 100644
--- a/tests/test_modifications.py
+++ b/tests/test_modifications.py
@@ -8,7 +8,9 @@
 
 
 class TestModifications(unittest.TestCase):
-    modification_handler = ModificationHandler("tests/test_data/modifications_cache.json")
+    modification_handler = ModificationHandler(
+        "tests/test_data/modifications_cache.json"
+    )
 
     # accept both A and U for selenocysteines
     # note that selenocysteines that are incorrectly encoded in SCOPData
@@ -64,4 +66,3 @@ def test_biopython_coverage(self):
 
 if __name__ == "__main__":
     unittest.main()
-