diff --git a/compiler/rustc_builtin_macros/src/assert/context.rs b/compiler/rustc_builtin_macros/src/assert/context.rs
index 7814422611439..a98cb6f0f760c 100644
--- a/compiler/rustc_builtin_macros/src/assert/context.rs
+++ b/compiler/rustc_builtin_macros/src/assert/context.rs
@@ -57,7 +57,6 @@ impl<'cx, 'a> Context<'cx, 'a> {
     /// Builds the whole `assert!` expression. For example, `let elem = 1; assert!(elem == 1);` expands to:
     ///
     /// ```rust
-    /// #![feature(generic_assert_internals)]
     /// let elem = 1;
     /// {
     ///   #[allow(unused_imports)]
diff --git a/library/core/src/macros/mod.rs b/library/core/src/macros/mod.rs
index 2ddedfa37fe27..0d4ca4d5f01e4 100644
--- a/library/core/src/macros/mod.rs
+++ b/library/core/src/macros/mod.rs
@@ -1569,7 +1569,12 @@ pub(crate) mod builtin {
     #[rustc_builtin_macro]
     #[macro_export]
     #[rustc_diagnostic_item = "assert_macro"]
-    #[allow_internal_unstable(panic_internals, edition_panic, generic_assert_internals)]
+    #[allow_internal_unstable(
+        core_intrinsics,
+        panic_internals,
+        edition_panic,
+        generic_assert_internals
+    )]
     macro_rules! assert {
         ($cond:expr $(,)?) => {{ /* compiler built-in */ }};
         ($cond:expr, $($arg:tt)+) => {{ /* compiler built-in */ }};