diff --git a/clippy_lints/src/collapsible_if.rs b/clippy_lints/src/collapsible_if.rs
index f03f34e5a4b3..d99547f01068 100644
--- a/clippy_lints/src/collapsible_if.rs
+++ b/clippy_lints/src/collapsible_if.rs
@@ -42,7 +42,7 @@ declare_clippy_lint! {
     ///
     /// Should be written:
     ///
-    /// ```rust.ignore
+    /// ```rust,ignore
     /// if x && y {
     ///     …
     /// }