diff --git a/capa/rules.py b/capa/rules.py
index 6fb90bc4..97ff3689 100644
--- a/capa/rules.py
+++ b/capa/rules.py
@@ -446,7 +446,7 @@ def build_statements(d, scope: str):
         else:
             # for instruction subscopes, we support a shorthand in which the top level AND is implied.
             # the following are equivalent:
-            # 
+            #
             #     - instruction:
             #       - and:
             #         - arch: i386
diff --git a/tests/test_rules_insn_scope.py b/tests/test_rules_insn_scope.py
index c4bbc768..27d07489 100644
--- a/tests/test_rules_insn_scope.py
+++ b/tests/test_rules_insn_scope.py
@@ -131,4 +131,3 @@ def test_scope_instruction_description():
             """
         )
     )
-