diff --git a/arch/x86_64/thread.c b/arch/x86_64/thread.c
index 6a18876..b206550 100644
--- a/arch/x86_64/thread.c
+++ b/arch/x86_64/thread.c
@@ -93,6 +93,8 @@ kern_status_t ml_thread_clone_user_context(
 	memcpy(regs, src_regs, sizeof *regs);
 
 	regs->rax = return_value;
+	regs->ss = 0x1b;
+	regs->cs = 0x23;
 
 	dest_ml->tr_fsbase = src_ml->tr_fsbase;
 	dest_ml->tr_gsbase = src_ml->tr_gsbase;