diff --git a/src/kernel/gdt.s b/src/kernel/gdt.s
index ea549e6..c7d56ec 100644
--- a/src/kernel/gdt.s
+++ b/src/kernel/gdt.s
@@ -25,7 +25,7 @@ gdt_write:
 	push rax
 	o64 retf
 .next:
-	ltr dx
+	ltr dx ; third arg is the TSS
 	ret
 
 global gdt_load