Index: kernel/arch/mips64/src/mips64.c
===================================================================
--- kernel/arch/mips64/src/mips64.c	(revision 4dee0cb265758a5ee4132e646c801b976b22f908)
+++ kernel/arch/mips64/src/mips64.c	(revision 8b36bf28adc74d3d3510444d9f6fbf2037ba01cd)
@@ -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);