Index: arch/ppc32/src/ppc32.c
===================================================================
--- arch/ppc32/src/ppc32.c	(revision 6445baf666d034f70d7717333a51e816a18263ae)
+++ arch/ppc32/src/ppc32.c	(revision 9417cdca2c73065e6f61ddbe2e5ec0ceb1d4ad41)
@@ -77,5 +77,5 @@
 void userspace(uspace_arg_t *kernel_uarg)
 {
-	userspace_asm((__address) kernel_uarg->uspace_uarg, (__address) kernel_uarg->uspace_stack, (__address) kernel_uarg->uspace_entry);
+	userspace_asm((__address) kernel_uarg->uspace_uarg, (__address) kernel_uarg->uspace_stack + THREAD_STACK_SIZE - SP_DELTA, (__address) kernel_uarg->uspace_entry);
 	
 	/* Unreachable */