diff --git a/Userland/Libraries/LibJS/Forward.h b/Userland/Libraries/LibJS/Forward.h
index 96727c646f..65fc47b0da 100644
--- a/Userland/Libraries/LibJS/Forward.h
+++ b/Userland/Libraries/LibJS/Forward.h
@@ -187,6 +187,7 @@ class Interpreter;
 class Identifier;
 class Intrinsics;
 struct IteratorRecord;
+class MemberExpression;
 class MetaProperty;
 class Module;
 struct ModuleRequest;