diff --git a/Libraries/LibCore/EventLoop.cpp b/Libraries/LibCore/EventLoop.cpp
index 1769b880b2..41248750e1 100644
--- a/Libraries/LibCore/EventLoop.cpp
+++ b/Libraries/LibCore/EventLoop.cpp
@@ -7,7 +7,6 @@
  */
 
 #include <AK/Badge.h>
-#include <LibCore/Event.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/EventLoopImplementation.h>
 #include <LibCore/EventReceiver.h>
diff --git a/Libraries/LibCore/EventLoop.h b/Libraries/LibCore/EventLoop.h
index 355ff0a8ec..3b29ca856f 100644
--- a/Libraries/LibCore/EventLoop.h
+++ b/Libraries/LibCore/EventLoop.h
@@ -13,8 +13,8 @@
 #include <AK/Function.h>
 #include <AK/Noncopyable.h>
 #include <AK/NonnullOwnPtr.h>
-#include <AK/Time.h>
-#include <LibCore/Event.h>
+#include <AK/NonnullRefPtr.h>
+#include <AK/RefPtr.h>
 #include <LibCore/Forward.h>
 #include <LibThreading/RWLock.h>
 
diff --git a/Libraries/LibCore/Notifier.cpp b/Libraries/LibCore/Notifier.cpp
index 4740e27108..2c8061acb6 100644
--- a/Libraries/LibCore/Notifier.cpp
+++ b/Libraries/LibCore/Notifier.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/Badge.h>
 #include <LibCore/Event.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/Notifier.h>
diff --git a/Libraries/LibCore/ThreadEventQueue.h b/Libraries/LibCore/ThreadEventQueue.h
index 65a5cabd9a..7826c98a5f 100644
--- a/Libraries/LibCore/ThreadEventQueue.h
+++ b/Libraries/LibCore/ThreadEventQueue.h
@@ -8,6 +8,7 @@
 
 #include <AK/NonnullOwnPtr.h>
 #include <AK/OwnPtr.h>
+#include <LibCore/Event.h>
 #include <LibCore/Forward.h>
 
 namespace Core {
diff --git a/Libraries/LibLine/Editor.cpp b/Libraries/LibLine/Editor.cpp
index d6cec44ba1..de7a772880 100644
--- a/Libraries/LibLine/Editor.cpp
+++ b/Libraries/LibLine/Editor.cpp
@@ -15,6 +15,7 @@
 #include <AK/ScopeGuard.h>
 #include <AK/ScopedValueRollback.h>
 #include <AK/StringBuilder.h>
+#include <AK/Time.h>
 #include <AK/Utf32View.h>
 #include <AK/Utf8View.h>
 #include <LibCore/ConfigFile.h>