diff --git a/xcode/.swiftlint.yml b/xcode/.swiftlint.yml
index 4ebda4f..64d52da 100644
--- a/xcode/.swiftlint.yml
+++ b/xcode/.swiftlint.yml
@@ -229,7 +229,7 @@ custom_rules:
 
   single_line_closure:
     name: "Single line closure"
-    regex: '\{[^\n]+ in [^\n]+'
+    regex: '[^\n\/\/]+\{[^\n]+ in [^\n]+'
     message: "Make a new line after `in` keyword in closure"
     severity: error