diff --git a/Source/JavaScriptCore/ChangeLog b/Source/JavaScriptCore/ChangeLog
index ac527dd..0d1e82e 100644
--- a/Source/JavaScriptCore/ChangeLog
+++ b/Source/JavaScriptCore/ChangeLog
@@ -1,3 +1,11 @@
+2021-10-13  Yusuke Suzuki  <ysuzuki@apple.com>
+
+        Unreviewed, speculative build fix with new clang
+
+        Speculative since I cannot install this clang now.
+
+        * b3/B3ValueRep.h:
+
 2021-10-13  Jean-Yves Avenard  <jya@apple.com>
 
         Clearly distinguish serial from concurrent WorkQueue
diff --git a/Source/JavaScriptCore/b3/B3ValueRep.h b/Source/JavaScriptCore/b3/B3ValueRep.h
index 11b75cc..157bc88 100644
--- a/Source/JavaScriptCore/b3/B3ValueRep.h
+++ b/Source/JavaScriptCore/b3/B3ValueRep.h
@@ -116,8 +116,6 @@
         u.reg = reg;
     }
 
-    ValueRep(const ValueRep&) = default;
-
     ValueRep(Kind kind)
         : m_kind(kind)
     {