diff --git a/querylog/json.go b/querylog/json.go
index 86f35e11..f9b35980 100644
--- a/querylog/json.go
+++ b/querylog/json.go
@@ -16,7 +16,7 @@ func (l *queryLog) getClientIP(clientIP string) string {
 		ip := net.ParseIP(clientIP)
 		if ip != nil {
 			ip4 := ip.To4()
-			const AnonymizeClientIP4Mask = 24
+			const AnonymizeClientIP4Mask = 16
 			const AnonymizeClientIP6Mask = 112
 			if ip4 != nil {
 				clientIP = ip4.Mask(net.CIDRMask(AnonymizeClientIP4Mask, 32)).String()
diff --git a/stats/stats_unit.go b/stats/stats_unit.go
index 6ef12116..09908945 100644
--- a/stats/stats_unit.go
+++ b/stats/stats_unit.go
@@ -449,7 +449,7 @@ func (s *statsCtx) getClientIP(clientIP string) string {
 		ip := net.ParseIP(clientIP)
 		if ip != nil {
 			ip4 := ip.To4()
-			const AnonymizeClientIP4Mask = 24
+			const AnonymizeClientIP4Mask = 16
 			const AnonymizeClientIP6Mask = 112
 			if ip4 != nil {
 				clientIP = ip4.Mask(net.CIDRMask(AnonymizeClientIP4Mask, 32)).String()