diff --git a/pkg/apis/dos/validation/dos.go b/pkg/apis/dos/validation/dos.go
index 36c5f49bf0..6ab0b8c4d9 100644
--- a/pkg/apis/dos/validation/dos.go
+++ b/pkg/apis/dos/validation/dos.go
@@ -203,7 +203,7 @@ func ValidateAppProtectDosAllowList(allowList []v1beta1.AllowListEntry) error {
 	for _, entry := range allowList {
 		ipValid := isValidIPWithMask(entry.IPWithMask)
 		if !ipValid {
-			return fmt.Errorf("Invalid IP with subnet mask: %s", entry.IPWithMask)
+			return fmt.Errorf("invalid IP with subnet mask: %s", entry.IPWithMask)
 		}
 	}
 	return nil