diff --git a/src/java.base/share/classes/jdk/internal/javac/PreviewFeature.java b/src/java.base/share/classes/jdk/internal/javac/PreviewFeature.java
index 05049effef8..c6ae5b13787 100644
--- a/src/java.base/share/classes/jdk/internal/javac/PreviewFeature.java
+++ b/src/java.base/share/classes/jdk/internal/javac/PreviewFeature.java
@@ -64,11 +64,10 @@ public @interface PreviewFeature {
      * Values should be annotated with the feature's {@code JEP}.
      */
     public enum Feature {
-        // not used, but required for interim javac to not warn.
-        VIRTUAL_THREADS,
-        FOREIGN,
-        @JEP(number=459, title="String Templates", status="Second Preview")
-        STRING_TEMPLATES,
+        // while building the interim javac, the ClassReader will produce a warning when loading a class
+        // keeping the constant of a feature that has been integrated or dropped, serves the purpose of muting such warnings.
+
+        //---
         @JEP(number=477, title="Implicitly Declared Classes and Instance Main Methods", status="Third Preview")
         IMPLICIT_CLASSES,
         @JEP(number=481, title="Scoped Values", status="Third Preview")