diff --git a/Userland/Libraries/LibCore/EventLoop.cpp b/Userland/Libraries/LibCore/EventLoop.cpp
index b7f6c109a7..1c9a4fdd07 100644
--- a/Userland/Libraries/LibCore/EventLoop.cpp
+++ b/Userland/Libraries/LibCore/EventLoop.cpp
@@ -62,7 +62,7 @@ struct EventLoop::Private {
 };
 
 // The main event loop is global to the program, so it may be accessed from multiple threads.
-// NOTE: s_main_event_loop is not declared here as it is needed in the header.
+Threading::MutexProtected<EventLoop*> s_main_event_loop;
 static Threading::MutexProtected<NeverDestroyed<IDAllocator>> s_id_allocator;
 static Threading::MutexProtected<RefPtr<InspectorServerConnection>> s_inspector_server_connection;
 
diff --git a/Userland/Libraries/LibCore/EventLoop.h b/Userland/Libraries/LibCore/EventLoop.h
index a6efab523d..dbdaa146c1 100644
--- a/Userland/Libraries/LibCore/EventLoop.h
+++ b/Userland/Libraries/LibCore/EventLoop.h
@@ -25,7 +25,7 @@
 
 namespace Core {
 
-static Threading::MutexProtected<EventLoop*> s_main_event_loop;
+extern Threading::MutexProtected<EventLoop*> s_main_event_loop;
 
 class EventLoop {
 public: