diff --git a/app/config/variables.php b/app/config/variables.php
index 3160fbf5c2..ad4317812a 100644
--- a/app/config/variables.php
+++ b/app/config/variables.php
@@ -422,7 +422,7 @@ return [
         'variables' => [
             [
                 'name' => '_APP_SMS_PROVIDER',
-                'description' => "Provider used for delivering SMS for Phone authentication. Use the following format: 'sms://[USER]:[SECRET]@[PROVIDER]'. \n\nAvailable providers are twilio, text-magic, telesign, msg91, and vonage.",
+                'description' => "Provider used for delivering SMS for Phone authentication. Use the following format: 'sms://[USER]:[SECRET]@[PROVIDER]'.\n\nEnsure `[USER]` and `[SECRET]` are URL encoded if they contain any non-alphanumeric characters.\n\nAvailable providers are twilio, text-magic, telesign, msg91, and vonage.",
                 'introduction' => '0.15.0',
                 'default' => '',
                 'required' => false,