diff --git a/src/java.base/share/classes/module-info.java b/src/java.base/share/classes/module-info.java
index f0d216d75e7..5478a9b1b14 100644
--- a/src/java.base/share/classes/module-info.java
+++ b/src/java.base/share/classes/module-info.java
@@ -155,7 +155,7 @@
     exports jdk.internal.javac to
         java.compiler,
         jdk.compiler,
-        jdk.incubator.code;
+        jdk.incubator.code; // Uses LazyConstant
     exports jdk.internal.access to
         java.desktop,
         java.logging,
diff --git a/src/jdk.incubator.code/share/classes/jdk/incubator/code/Body.java b/src/jdk.incubator.code/share/classes/jdk/incubator/code/Body.java
index 47a2739c4a3..d8b3f1312b0 100644
--- a/src/jdk.incubator.code/share/classes/jdk/incubator/code/Body.java
+++ b/src/jdk.incubator.code/share/classes/jdk/incubator/code/Body.java
@@ -74,7 +74,7 @@ public final class Body implements CodeElement<Body, Block> {
     // Lazily computed map of a block to its immediate dominator
     // Computed after body is built
     // @@@ when dominance checks are implemented, may be computed and used in build method
-    LazyConstant<Map<Block, Block>> idoms = LazyConstant.of(this::computeImmediateDominators);
+    final LazyConstant<Map<Block, Block>> idoms = LazyConstant.of(this::computeImmediateDominators);
 
     /**
      * Constructs a body, whose connected ancestor body is the given ancestor body.
diff --git a/src/jdk.incubator.code/share/classes/module-info.java b/src/jdk.incubator.code/share/classes/module-info.java
index 127a734ad2c..3cd84aabb12 100644
--- a/src/jdk.incubator.code/share/classes/module-info.java
+++ b/src/jdk.incubator.code/share/classes/module-info.java
@@ -34,7 +34,7 @@
 /// {@incubating}
 ///
 /// @moduleGraph
-@ParticipatesInPreview
+@ParticipatesInPreview // Uses LazyConstant
 module jdk.incubator.code {
     requires transitive jdk.compiler;