diff --git a/kernel/src/thread/Thread.h b/kernel/src/thread/Thread.h
index 72207b05..9c902b67 100644
--- a/kernel/src/thread/Thread.h
+++ b/kernel/src/thread/Thread.h
@@ -21,6 +21,8 @@ enum class ThreadState
     Dying
 };
 
+// FIXME: Save floating point state. (SSE registers on x86_64 using FXSAVE and FXRSTOR)
+
 struct Thread : public LinkedListNode<Thread>
 {
     Registers regs;