diff --git a/arch/powerpc/lib/div64.S b/arch/powerpc/lib/div64.S
index 3527569e992685e728c3e9e6902e6ec06a2e4145..83d9832fd919c3ab02bb91fea3b19fe828cbddc1 100644
--- a/arch/powerpc/lib/div64.S
+++ b/arch/powerpc/lib/div64.S
@@ -33,9 +33,10 @@ _GLOBAL(__div64_32)
 	cntlzw	r0,r5		# we are shifting the dividend right
 	li	r10,-1		# to make it < 2^32, and shifting
 	srw	r10,r10,r0	# the divisor right the same amount,
-	add	r9,r4,r10	# rounding up (so the estimate cannot
+	addc	r9,r4,r10	# rounding up (so the estimate cannot
 	andc	r11,r6,r10	# ever be too large, only too small)
 	andc	r9,r9,r10
+	addze	r9,r9
 	or	r11,r5,r11
 	rotlw	r9,r9,r0
 	rotlw	r11,r11,r0