diff --git a/kernel/mips64/zasum.S b/kernel/mips64/zasum.S
index 539fb6b7e4..a7af6918da 100644
--- a/kernel/mips64/zasum.S
+++ b/kernel/mips64/zasum.S
@@ -73,10 +73,10 @@
 	MTC	$0,  s1
 
 	MTC	$0,  s2
+	blez    INCX, .L999
 	dsll	INCX, INCX, ZBASE_SHIFT
 
 	blez	N, .L999
-	blez    INCX, .L999
 	dsra	I, N, 2
 
 	blez	I, .L25