diff --git a/routeros/provider_schema_helpers.go b/routeros/provider_schema_helpers.go
index 87399772..a666031a 100644
--- a/routeros/provider_schema_helpers.go
+++ b/routeros/provider_schema_helpers.go
@@ -182,7 +182,7 @@ var (
 		"value should be an integer or a time interval: 0..4294967295 (seconds) or 500ms, 2d, 1w")
 	ValidationAutoYesNo = validation.StringInSlice([]string{"auto", "yes", "no"}, false)
 	ValidationIpAddress = validation.StringMatch(
-		regexp.MustCompile(`^$|^!?(\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(/([1-2][0-9]|3[0-2]))?)$`),
+		regexp.MustCompile(`^$|^!?(\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(/([0-9]|[1-2][0-9]|3[0-2]))?)$`),
 		"Allowed addresses should be a CIDR IP address or an empty string",
 	)
 	ValidationMacAddress = validation.StringMatch(