diff --git a/solutions/ownership/borrowing.md b/solutions/ownership/borrowing.md
index d82d3da8..320e78a7 100644
--- a/solutions/ownership/borrowing.md
+++ b/solutions/ownership/borrowing.md
@@ -149,6 +149,6 @@ fn main() {
 
     // add one line below to make a compiler error: cannot borrow `s` as mutable more than once at a time
     // you can't use r1 and r2 at the same time
-    r1.push_str("world");
+    println!("{}, {}", r1, r2);
 }
-```
\ No newline at end of file
+```