diff --git a/Kernel/Arch/x86/IO.h b/Kernel/Arch/x86/IO.h
index d53264c22e..f8a2c38c26 100644
--- a/Kernel/Arch/x86/IO.h
+++ b/Kernel/Arch/x86/IO.h
@@ -10,6 +10,9 @@
 #include <AK/String.h>
 #include <AK/Types.h>
 
+#include <AK/Platform.h>
+VALIDATE_IS_X86()
+
 namespace IO {
 
 // Every character written to this IO port is written to the Bochs console