Index: kernel/arch/mips64/src/mips64.c
===================================================================
--- kernel/arch/mips64/src/mips64.c	(revision 6d123b32472cceb7f780a7b2fded06ffd7730faf)
+++ kernel/arch/mips64/src/mips64.c	(revision 0bbd13e274302c7c89dd4ea7cad7dbcc3ecfc524)
@@ -188,5 +188,6 @@
 	    cp0_status_um_bit | cp0_status_ie_enabled_bit));
 	cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry);
-	userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + STACK_SIZE),
+	userspace_asm(((uintptr_t) kernel_uarg->uspace_stack +
+	    kernel_uarg->uspace_stack_size),
 	    (uintptr_t) kernel_uarg->uspace_uarg,
 	    (uintptr_t) kernel_uarg->uspace_entry);