diff --git a/kernel/power/zgemm_beta.S b/kernel/power/zgemm_beta.S
index 43b72ca15..1f4c29210 100644
--- a/kernel/power/zgemm_beta.S
+++ b/kernel/power/zgemm_beta.S
@@ -134,7 +134,7 @@ LL(12):
 	STFD	f0,  14 * SIZE(CO1)
 	STFD	f0,  15 * SIZE(CO1)
 
-	dcbst	PRE, CO1
+	dcbtst	PRE, CO1
 	addi	CO1, CO1,  16 * SIZE
 	bdnz	LL(12)
 	.align 4