diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
index 6821a6f1298a..9bc12c2170d3 100644
--- a/library/alloc/src/string.rs
+++ b/library/alloc/src/string.rs
@@ -1783,11 +1783,7 @@ impl String {
         // ahead. This is safe because sufficient capacity was just reserved, and `idx`
         // is a char boundary.
         unsafe {
-            ptr::copy(
-                self.vec.as_ptr().add(idx),
-                self.vec.as_mut_ptr().add(idx + amt),
-                len - idx,
-            );
+            ptr::copy(self.vec.as_ptr().add(idx), self.vec.as_mut_ptr().add(idx + amt), len - idx);
         }
 
         // SAFETY: Copy the new string slice into the vacated region if `idx != len`,