diff --git a/.swiftlint.yml b/.swiftlint.yml
index d5d72769..6bcab726 100644
--- a/.swiftlint.yml
+++ b/.swiftlint.yml
@@ -41,7 +41,6 @@ only_rules:
   # - unused_closure_parameter
   - unused_control_flow_label
   - unused_enumerated # When the index or the item is not used, .enumerated() can be removed.
-  - unused_optional_binding # Prefer != nil over let _ =
   - unused_setter_value
   - weak_delegate # Delegates should be weak to avoid reference cycles
 
diff --git a/format.sh b/format.sh
index 0bcd7345..04acdbbc 100755
--- a/format.sh
+++ b/format.sh
@@ -18,4 +18,4 @@ if test $check_uncommitted_files -eq 1; then ./script/check-uncommitted-files.sh
 if test $check_uncommitted_files -eq 1; then ./script/check-uncommitted-files.sh; fi
 
 ./script/install-dep.sh --swiftlint
-./.deps/swiftlint/swiftlint lint --quiet --fix
+./.deps/swiftlint/swiftlint lint --quiet