diff --git a/src/test/jtx/Env.h b/src/test/jtx/Env.h
index 6e46a9cdd..2c3e1dbf6 100644
--- a/src/test/jtx/Env.h
+++ b/src/test/jtx/Env.h
@@ -83,9 +83,15 @@ supported_amendments()
                     "Unknown feature: " + s + "  in supportedAmendments.");
         }
         //@@start rng-test-environment-gating
-        // TODO: ConsensusEntropy injects a pseudo-tx every ledger which
-        // breaks existing test transaction count assumptions. Exclude from
-        // default test set until dedicated tests are written.
+        // ConsensusEntropy is a supported amendment, but it is intentionally
+        // excluded from the default jtx fixture set.
+        //
+        // Enabling it changes every closed ledger by injecting a deterministic
+        // ttCONSENSUS_ENTROPY pseudo-transaction. Many legacy Env tests make
+        // exact transaction-count / metadata-shape assertions and are not
+        // trying to exercise ledger-wide entropy materialization. Keep those
+        // default fixtures stable; tests that cover entropy opt in explicitly
+        // with `supported_amendments() | featureConsensusEntropy`.
         return FeatureBitset(feats) - featureConsensusEntropy;
         //@@end rng-test-environment-gating
     }();