diff --git a/src/librustc_mir/transform/check_consts/validation.rs b/src/librustc_mir/transform/check_consts/validation.rs
index c5938426f61..dd0df72a0c4 100644
--- a/src/librustc_mir/transform/check_consts/validation.rs
+++ b/src/librustc_mir/transform/check_consts/validation.rs
@@ -248,9 +248,9 @@ impl Validator<'mir, 'tcx> {
             return;
         }
 
-        // If an operation is supported in miri (and is not already controlled by a feature gate) it
-        // can be turned on with `-Zunleash-the-miri-inside-of-you`.
-        let is_unleashable = O::IS_SUPPORTED_IN_MIRI && O::feature_gate().is_none();
+        // If an operation is supported in miri it can be turned on with
+        // `-Zunleash-the-miri-inside-of-you`.
+        let is_unleashable = O::IS_SUPPORTED_IN_MIRI;
 
         if is_unleashable && self.tcx.sess.opts.debugging_opts.unleash_the_miri_inside_of_you {
             self.tcx.sess.span_warn(span, "skipping const checks");