diff --git a/post/lib_ppc/asm.S b/post/lib_ppc/asm.S
index 5e72b34..1279176 100644
--- a/post/lib_ppc/asm.S
+++ b/post/lib_ppc/asm.S
@@ -308,7 +308,10 @@
 	lwz	r3, 0(r4)
 	lwz	r4, 0(r5)
 	mr	r6, r7
+
+	mfcr	r7
 	blrl
+	mtcr	r7
 
 	lwz	r7, 8(r1)
 	stw	r3, 0(r7)