diff --git a/lib/libc/pthread/sys/x86_64/pthread_unmap_exit.S b/lib/libc/pthread/sys/x86_64/pthread_unmap_exit.S
index b9d8232..112d2e0 100644
--- a/lib/libc/pthread/sys/x86_64/pthread_unmap_exit.S
+++ b/lib/libc/pthread/sys/x86_64/pthread_unmap_exit.S
@@ -23,7 +23,7 @@ __pthread_unmap_exit:
 	syscall
 
 	/* next, close the handle to the address space */
-	mov $SYS_THREAD_EXIT, %rax
+	mov $SYS_KERN_HANDLE_CLOSE, %rax
 	mov %rbx, %rdi
 	syscall