diff --git a/drivers/platform/msm/ipa/ipa_v2/ipa_rt.c b/drivers/platform/msm/ipa/ipa_v2/ipa_rt.c
index 50bb9bcf9674..e4f57d8580ca 100644
--- a/drivers/platform/msm/ipa/ipa_v2/ipa_rt.c
+++ b/drivers/platform/msm/ipa/ipa_v2/ipa_rt.c
@@ -54,7 +54,7 @@ int __ipa_generate_rt_hw_rule_v2(enum ipa_ip_type ip,
 	struct ipa_hdr_entry *hdr_entry;
 
 	if (buf == NULL) {
-		memset(tmp, 0, (IPA_RT_FLT_HW_RULE_BUF_SIZE/4));
+		memset(tmp, 0, sizeof(tmp));
 		buf = (u8 *)tmp;
 	}