diff --git a/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp b/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp
index d544d29a48..e9f465957d 100644
--- a/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp
+++ b/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp
@@ -5,7 +5,6 @@
  */
 
 #include "ThreadStackWidget.h"
-#include <AK/ByteBuffer.h>
 #include <LibCore/Timer.h>
 #include <LibGUI/BoxLayout.h>
 #include <LibSymbolication/Symbolication.h>