diff --git a/sys/arm64/arm64/machdep.c b/sys/arm64/arm64/machdep.c
index b099980634f6..2eaf4ef14390 100644
--- a/sys/arm64/arm64/machdep.c
+++ b/sys/arm64/arm64/machdep.c
@@ -365,7 +365,7 @@ init_proc0(vm_offset_t kstack)
 
 	proc_linkup0(&proc0, &thread0);
 	thread0.td_kstack = kstack;
-	thread0.td_kstack_pages = KSTACK_PAGES;
+	thread0.td_kstack_pages = kstack_pages;
 #if defined(PERTHREAD_SSP)
 	thread0.td_md.md_canary = boot_canary;
 #endif