diff --git a/arch/ppc64/kernel/signal32.c b/arch/ppc64/kernel/signal32.c
index b0e167d..3c2fa5c 100644
--- a/arch/ppc64/kernel/signal32.c
+++ b/arch/ppc64/kernel/signal32.c
@@ -657,7 +657,7 @@
 
 	/* Save user registers on the stack */
 	frame = &rt_sf->uc.uc_mcontext;
-	if (put_user(regs->gpr[1], (unsigned long __user *)newsp))
+	if (put_user(regs->gpr[1], (u32 __user *)newsp))
 		goto badframe;
 
 	if (vdso32_rt_sigtramp && current->thread.vdso_base) {
@@ -842,7 +842,7 @@
 		regs->link = (unsigned long) frame->mctx.tramp;
 	}
 
-	if (put_user(regs->gpr[1], (unsigned long __user *)newsp))
+	if (put_user(regs->gpr[1], (u32 __user *)newsp))
 		goto badframe;
 	regs->gpr[1] = (unsigned long) newsp;
 	regs->gpr[3] = sig;