diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index cfdfec846c..012d369053 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -1376,11 +1376,16 @@ ThrowCompletionOr<Reference> Expression::to_reference(Interpreter&) const
 ThrowCompletionOr<Reference> Identifier::to_reference(Interpreter& interpreter) const
 {
     if (m_cached_environment_coordinate.has_value()) {
-        auto* environment = interpreter.vm().running_execution_context().lexical_environment;
-        for (size_t i = 0; i < m_cached_environment_coordinate->hops; ++i)
-            environment = environment->outer_environment();
-        VERIFY(environment);
-        VERIFY(environment->is_declarative_environment());
+        Environment* environment = nullptr;
+        if (m_cached_environment_coordinate->index == EnvironmentCoordinate::global_marker) {
+            environment = &interpreter.vm().current_realm()->global_environment();
+        } else {
+            environment = interpreter.vm().running_execution_context().lexical_environment;
+            for (size_t i = 0; i < m_cached_environment_coordinate->hops; ++i)
+                environment = environment->outer_environment();
+            VERIFY(environment);
+            VERIFY(environment->is_declarative_environment());
+        }
         if (!environment->is_permanently_screwed_by_eval()) {
             return Reference { *environment, string(), interpreter.vm().in_strict_mode(), m_cached_environment_coordinate };
         }
diff --git a/Userland/Libraries/LibJS/Runtime/EnvironmentCoordinate.h b/Userland/Libraries/LibJS/Runtime/EnvironmentCoordinate.h
index f2ca2b0050..54eb605215 100644
--- a/Userland/Libraries/LibJS/Runtime/EnvironmentCoordinate.h
+++ b/Userland/Libraries/LibJS/Runtime/EnvironmentCoordinate.h
@@ -14,6 +14,8 @@ namespace JS {
 struct EnvironmentCoordinate {
     size_t hops { 0 };
     size_t index { 0 };
+
+    static constexpr size_t global_marker = 0xffffffff;
 };
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/GlobalEnvironment.cpp b/Userland/Libraries/LibJS/Runtime/GlobalEnvironment.cpp
index ec1dbc729e..5d00a5fdf9 100644
--- a/Userland/Libraries/LibJS/Runtime/GlobalEnvironment.cpp
+++ b/Userland/Libraries/LibJS/Runtime/GlobalEnvironment.cpp
@@ -39,8 +39,11 @@ ThrowCompletionOr<Value> GlobalEnvironment::get_this_binding(VM&) const
 }
 
 // 9.1.1.4.1 HasBinding ( N ), https://tc39.es/ecma262/#sec-global-environment-records-hasbinding-n
-ThrowCompletionOr<bool> GlobalEnvironment::has_binding(FlyString const& name, Optional<size_t>*) const
+ThrowCompletionOr<bool> GlobalEnvironment::has_binding(FlyString const& name, Optional<size_t>* out_index) const
 {
+    if (out_index)
+        *out_index = EnvironmentCoordinate::global_marker;
+
     // 1. Let DclRec be envRec.[[DeclarativeRecord]].
     // 2. If ! DclRec.HasBinding(N) is true, return true.
     if (MUST(m_declarative_record->has_binding(name)))
diff --git a/Userland/Libraries/LibJS/Runtime/Reference.cpp b/Userland/Libraries/LibJS/Runtime/Reference.cpp
index c6bff072ec..9cf9e47af1 100644
--- a/Userland/Libraries/LibJS/Runtime/Reference.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Reference.cpp
@@ -68,7 +68,7 @@ ThrowCompletionOr<void> Reference::put_value(VM& vm, Value value)
     VERIFY(m_base_environment);
 
     // c. Return ? base.SetMutableBinding(V.[[ReferencedName]], W, V.[[Strict]]) (see 9.1).
-    if (m_environment_coordinate.has_value())
+    if (m_environment_coordinate.has_value() && m_environment_coordinate->index != EnvironmentCoordinate::global_marker)
         return static_cast<DeclarativeEnvironment*>(m_base_environment)->set_mutable_binding_direct(vm, m_environment_coordinate->index, value, m_strict);
     else
         return m_base_environment->set_mutable_binding(vm, m_name.as_string(), value, m_strict);
@@ -138,7 +138,7 @@ ThrowCompletionOr<Value> Reference::get_value(VM& vm) const
     VERIFY(m_base_environment);
 
     // c. Return ? base.GetBindingValue(V.[[ReferencedName]], V.[[Strict]]) (see 9.1).
-    if (m_environment_coordinate.has_value())
+    if (m_environment_coordinate.has_value() && m_environment_coordinate->index != EnvironmentCoordinate::global_marker)
         return static_cast<DeclarativeEnvironment*>(m_base_environment)->get_binding_value_direct(vm, m_environment_coordinate->index, m_strict);
     return m_base_environment->get_binding_value(vm, m_name.as_string(), m_strict);
 }