diff --git a/src/arch/x86_64/gdt.rs b/src/arch/x86_64/gdt.rs
index 8bc0629..199db5d 100644
--- a/src/arch/x86_64/gdt.rs
+++ b/src/arch/x86_64/gdt.rs
@@ -47,7 +47,7 @@ static mut INIT_GDT: [GdtEntry; 4] = [
     // Kernel data
     GdtEntry::new(0, 0, GDT_A_PRESENT | GDT_A_RING_0 | GDT_A_SYSTEM | GDT_A_PRIVILEGE, GDT_F_LONG_MODE),
     // Kernel TLS
-    GdtEntry::new(0, 0, GDT_A_PRESENT | GDT_A_RING_3 | GDT_A_SYSTEM | GDT_A_PRIVILEGE, GDT_F_LONG_MODE)
+    GdtEntry::new(0, 0, GDT_A_PRESENT | GDT_A_RING_0 | GDT_A_SYSTEM | GDT_A_PRIVILEGE, GDT_F_LONG_MODE)
 ];
 
 #[thread_local]