diff --git a/client/src/Validation/validation.js b/client/src/Validation/validation.js
index 847226a1f..7cba122e0 100644
--- a/client/src/Validation/validation.js
+++ b/client/src/Validation/validation.js
@@ -165,7 +165,7 @@ const monitorValidation = joi.object({
         .messages({
             "string.empty": "This field is required.",
             "string.uri": "The URL you provided is not valid.",
-            "string.invalidUrl": "Please enter a valid URL.",
+            "string.invalidUrl": "Please enter a valid URL with optional port",
             "string.invalidDockerID": "Please enter a valid 64-character Docker container ID.",
             "string.pattern.base": "Please enter a valid container ID.",
         }),