diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs
index 1abb729a4c00..905212eb372b 100644
--- a/library/core/src/fmt/mod.rs
+++ b/library/core/src/fmt/mod.rs
@@ -1827,7 +1827,7 @@ impl<'a> Formatter<'a> {
     /// }
     ///
     /// assert_eq!(&format!("{:+}", Foo(23)), "Foo(+23)");
-    /// assert_eq!(&format!("{:+}", Foo(-32)), "Foo(-23)");
+    /// assert_eq!(&format!("{:+}", Foo(-23)), "Foo(-23)");
     /// assert_eq!(&format!("{}", Foo(23)), "Foo(23)");
     /// ```
     #[must_use]