diff --git a/arch/ppc/makecontext.c b/arch/ppc/makecontext.c
index 1b9efdf..729f465 100644
--- a/arch/ppc/makecontext.c
+++ b/arch/ppc/makecontext.c
@@ -44,7 +44,7 @@ __makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
 	ucp->uc_mcontext.gregs[REG_R31]  = (uintptr_t) ucp->uc_link;
 	ucp->uc_mcontext.gregs[REG_SP]   = (uintptr_t) sp;
 
-	sp[0] = (uintptr_t) &__start_context;
+	sp[0] = 0;
 	sp[uc_link] = (uintptr_t) ucp->uc_link;
 	argp = &sp[2];
 
diff --git a/arch/ppc64/makecontext.c b/arch/ppc64/makecontext.c
index 9d6b998..91fb579 100644
--- a/arch/ppc64/makecontext.c
+++ b/arch/ppc64/makecontext.c
@@ -45,7 +45,7 @@ __makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
 	ucp->uc_mcontext.gp_regs[REG_ENTRY] = (uintptr_t) func;
 	ucp->uc_mcontext.gp_regs[REG_R31]   = (uintptr_t) ucp->uc_link;
 
-	sp[0] = (uintptr_t) &__start_context;
+	sp[0] = 0;
 	sp[uc_link] = (uintptr_t) ucp->uc_link;
 	argp = &sp[2];