diff --git a/compiler/rustc_error_codes/src/error_codes/E0453.md b/compiler/rustc_error_codes/src/error_codes/E0453.md
index 11789db8f36..86ca0d9eca9 100644
--- a/compiler/rustc_error_codes/src/error_codes/E0453.md
+++ b/compiler/rustc_error_codes/src/error_codes/E0453.md
@@ -8,8 +8,8 @@ Example of erroneous code:
 
 #[allow(non_snake_case)]
 fn main() {
-    let MyNumber = 2; // error: allow(non_snake_case) overruled by outer
-                      //        forbid(non_snake_case)
+    // error: allow(non_snake_case) incompatible with previous forbid
+    let MyNumber = 2;
 }
 ```