diff --git a/book/en-us/02-usability.md b/book/en-us/02-usability.md
index e0c2652..2153b32 100644
--- a/book/en-us/02-usability.md
+++ b/book/en-us/02-usability.md
@@ -299,7 +299,8 @@ int main() {
     MagicFoo magicFoo = {1, 2, 3, 4, 5};
 
     std::cout << "magicFoo: ";
-    for (std::vector<int>::iterator it = magicFoo.vec.begin(); it != magicFoo.vec.end(); ++it) std::cout << *it << std::endl;
+    for (std::vector<int>::iterator it = magicFoo.vec.begin(); it != magicFoo.vec.end(); ++it) 
+        std::cout << *it << std::endl;
 }
 ```