diff --git a/Libraries/LibJS/Runtime/Function.h b/Libraries/LibJS/Runtime/Function.h
index 13bd3f5ccb..d54f059ec2 100644
--- a/Libraries/LibJS/Runtime/Function.h
+++ b/Libraries/LibJS/Runtime/Function.h
@@ -50,8 +50,6 @@ public:
 
     virtual void visit_edges(Visitor&) override;
 
-    virtual bool is_script_function() const { return false; }
-
     BoundFunction* bind(Value bound_this_value, Vector<Value> arguments);
 
     Value bound_this() const { return m_bound_this; }
diff --git a/Libraries/LibJS/Runtime/Object.h b/Libraries/LibJS/Runtime/Object.h
index 2e37b50dc4..5486cc938f 100644
--- a/Libraries/LibJS/Runtime/Object.h
+++ b/Libraries/LibJS/Runtime/Object.h
@@ -117,6 +117,7 @@ public:
     virtual bool is_error() const { return false; }
     virtual bool is_function() const { return false; }
     virtual bool is_native_function() const { return false; }
+    virtual bool is_script_function() const { return false; }
     virtual bool is_bound_function() const { return false; }
     virtual bool is_proxy_object() const { return false; }
     virtual bool is_regexp_object() const { return false; }