diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index 57e5c92ee4..b0014cca06 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -665,8 +665,6 @@ Reference Expression::to_reference(Interpreter&, GlobalObject&) const
 
 Reference Identifier::to_reference(Interpreter& interpreter, GlobalObject&) const
 {
-    if (m_argument_index.has_value())
-        return Reference(Reference::CallFrameArgument, m_argument_index.value(), string());
     return interpreter.vm().get_reference(string());
 }
 
@@ -1315,9 +1313,6 @@ Value Identifier::execute(Interpreter& interpreter, GlobalObject& global_object)
 {
     InterpreterNodeScope node_scope { interpreter, *this };
 
-    if (m_argument_index.has_value())
-        return interpreter.vm().argument(m_argument_index.value());
-
     auto value = interpreter.vm().get_variable(string(), global_object);
     if (value.is_empty()) {
         if (!interpreter.exception())
@@ -1330,10 +1325,7 @@ Value Identifier::execute(Interpreter& interpreter, GlobalObject& global_object)
 void Identifier::dump(int indent) const
 {
     print_indent(indent);
-    if (m_argument_index.has_value())
-        outln("Identifier \"{}\" (argument #{})", m_string, m_argument_index.value());
-    else
-        outln("Identifier \"{}\"", m_string);
+    outln("Identifier \"{}\"", m_string);
 }
 
 void SpreadExpression::dump(int indent) const
diff --git a/Userland/Libraries/LibJS/AST.h b/Userland/Libraries/LibJS/AST.h
index 1a1fca4bc9..457a20e8c3 100644
--- a/Userland/Libraries/LibJS/AST.h
+++ b/Userland/Libraries/LibJS/AST.h
@@ -776,15 +776,13 @@ private:
 
 class Identifier final : public Expression {
 public:
-    explicit Identifier(SourceRange source_range, FlyString string, Optional<size_t> argument_index = {})
+    explicit Identifier(SourceRange source_range, FlyString string)
         : Expression(source_range)
         , m_string(move(string))
-        , m_argument_index(move(argument_index))
     {
     }
 
     FlyString const& string() const { return m_string; }
-    Optional<size_t> const& argument_index() const { return m_argument_index; }
 
     virtual Value execute(Interpreter&, GlobalObject&) const override;
     virtual void dump(int indent) const override;
@@ -795,7 +793,6 @@ private:
     virtual bool is_identifier() const override { return true; }
 
     FlyString m_string;
-    Optional<size_t> m_argument_index;
 };
 
 class ClassMethod final : public ASTNode {
diff --git a/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp b/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
index 77f589f66b..a6029f20cc 100644
--- a/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
@@ -267,10 +267,7 @@ void RegExpLiteral::generate_bytecode(Bytecode::Generator& generator) const
 
 void Identifier::generate_bytecode(Bytecode::Generator& generator) const
 {
-    if (m_argument_index.has_value())
-        generator.emit<Bytecode::Op::LoadArgument>(m_argument_index.value());
-    else
-        generator.emit<Bytecode::Op::GetVariable>(generator.intern_string(m_string));
+    generator.emit<Bytecode::Op::GetVariable>(generator.intern_string(m_string));
 }
 
 void AssignmentExpression::generate_bytecode(Bytecode::Generator& generator) const
diff --git a/Userland/Libraries/LibJS/Bytecode/Instruction.h b/Userland/Libraries/LibJS/Bytecode/Instruction.h
index 58139ffd4b..8c0e9289dc 100644
--- a/Userland/Libraries/LibJS/Bytecode/Instruction.h
+++ b/Userland/Libraries/LibJS/Bytecode/Instruction.h
@@ -65,7 +65,6 @@
     O(Decrement)                        \
     O(Throw)                            \
     O(PushDeclarativeEnvironmentRecord) \
-    O(LoadArgument)                     \
     O(EnterUnwindContext)               \
     O(LeaveUnwindContext)               \
     O(ContinuePendingUnwind)            \
diff --git a/Userland/Libraries/LibJS/Bytecode/Op.cpp b/Userland/Libraries/LibJS/Bytecode/Op.cpp
index 6e610433fd..aedbe50289 100644
--- a/Userland/Libraries/LibJS/Bytecode/Op.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/Op.cpp
@@ -429,11 +429,6 @@ void PutByValue::execute_impl(Bytecode::Interpreter& interpreter) const
     }
 }
 
-void LoadArgument::execute_impl(Bytecode::Interpreter& interpreter) const
-{
-    interpreter.accumulator() = interpreter.vm().argument(m_index);
-}
-
 void GetIterator::execute_impl(Bytecode::Interpreter& interpreter) const
 {
     interpreter.accumulator() = get_iterator(interpreter.global_object(), interpreter.accumulator());
@@ -672,11 +667,6 @@ String PutByValue::to_string_impl(const Bytecode::Executable&) const
     return String::formatted("PutByValue base:{}, property:{}", m_base, m_property);
 }
 
-String LoadArgument::to_string_impl(const Bytecode::Executable&) const
-{
-    return String::formatted("LoadArgument {}", m_index);
-}
-
 String GetIterator::to_string_impl(Executable const&) const
 {
     return "GetIterator";
diff --git a/Userland/Libraries/LibJS/Bytecode/Op.h b/Userland/Libraries/LibJS/Bytecode/Op.h
index 055fdab701..85cb43d43f 100644
--- a/Userland/Libraries/LibJS/Bytecode/Op.h
+++ b/Userland/Libraries/LibJS/Bytecode/Op.h
@@ -651,22 +651,6 @@ private:
     HashMap<u32, Variable> m_variables;
 };
 
-class LoadArgument final : public Instruction {
-public:
-    explicit LoadArgument(size_t index)
-        : Instruction(Type::LoadArgument)
-        , m_index(index)
-    {
-    }
-
-    void execute_impl(Bytecode::Interpreter&) const;
-    String to_string_impl(Bytecode::Executable const&) const;
-    void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
-
-private:
-    size_t m_index { 0 };
-};
-
 class GetIterator final : public Instruction {
 public:
     GetIterator()
diff --git a/Userland/Libraries/LibJS/Parser.cpp b/Userland/Libraries/LibJS/Parser.cpp
index 3a3da65e36..81acec4917 100644
--- a/Userland/Libraries/LibJS/Parser.cpp
+++ b/Userland/Libraries/LibJS/Parser.cpp
@@ -659,23 +659,7 @@ Parser::PrimaryExpressionParseResult Parser::parse_primary_expression()
             set_try_parse_arrow_function_expression_failed_at_position(position(), true);
         }
         auto string = consume().value();
-        Optional<size_t> argument_index;
-        if (!m_state.function_parameters.is_empty()) {
-            size_t i = 0;
-            for (auto& parameter : m_state.function_parameters.last()) {
-                parameter.binding.visit(
-                    [&](FlyString const& name) {
-                        if (name == string) {
-                            argument_index = i;
-                        }
-                    },
-                    [&](BindingPattern const&) {
-                    });
-                ++i;
-            }
-        }
-        argument_index = {};
-        return { create_ast_node<Identifier>({ m_state.current_token.filename(), rule_start.position(), position() }, string, argument_index) };
+        return { create_ast_node<Identifier>({ m_state.current_token.filename(), rule_start.position(), position() }, string) };
     }
     case TokenType::NumericLiteral:
         return { create_ast_node<NumericLiteral>({ m_state.current_token.filename(), rule_start.position(), position() }, consume_and_validate_numeric_literal().double_value()) };
diff --git a/Userland/Libraries/LibJS/Runtime/Reference.cpp b/Userland/Libraries/LibJS/Runtime/Reference.cpp
index 76ccbb042e..2bc6b466f8 100644
--- a/Userland/Libraries/LibJS/Runtime/Reference.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Reference.cpp
@@ -19,11 +19,6 @@ void Reference::put(GlobalObject& global_object, Value value)
         return;
     }
 
-    if (m_call_frame_argument_index.has_value()) {
-        global_object.vm().call_frame().arguments[m_call_frame_argument_index.value()] = value;
-        return;
-    }
-
     if (is_local_variable() || is_global_variable()) {
         if (is_local_variable())
             vm.set_variable(m_name.to_string(), value, global_object);
@@ -73,9 +68,6 @@ Value Reference::get(GlobalObject& global_object)
         return {};
     }
 
-    if (m_call_frame_argument_index.has_value())
-        return global_object.vm().argument(m_call_frame_argument_index.value());
-
     if (is_local_variable() || is_global_variable()) {
         Value value;
         if (is_local_variable())
diff --git a/Userland/Libraries/LibJS/Runtime/Reference.h b/Userland/Libraries/LibJS/Runtime/Reference.h
index 337d852623..864d7855c4 100644
--- a/Userland/Libraries/LibJS/Runtime/Reference.h
+++ b/Userland/Libraries/LibJS/Runtime/Reference.h
@@ -40,15 +40,6 @@ public:
     {
     }
 
-    enum CallFrameArgumentTag { CallFrameArgument };
-    Reference(CallFrameArgumentTag, size_t index, FlyString const& name)
-        : m_base(js_null())
-        , m_name(name)
-        , m_call_frame_argument_index(index)
-        , m_local_variable(true)
-    {
-    }
-
     Value base() const { return m_base; }
     const PropertyName& name() const { return m_name; }
     bool is_strict() const { return m_strict; }
@@ -83,7 +74,6 @@ private:
 
     Value m_base;
     PropertyName m_name;
-    Optional<size_t> m_call_frame_argument_index;
     bool m_strict { false };
     bool m_local_variable { false };
     bool m_global_variable { false };