diff --git a/lib/http-routes/schemas/create-call.js b/lib/http-routes/schemas/create-call.js
index a36ebbe4..ceffd0ae 100644
--- a/lib/http-routes/schemas/create-call.js
+++ b/lib/http-routes/schemas/create-call.js
@@ -116,8 +116,8 @@ const customSanitizeFunction = (value) => {
       /* trims characters at the beginning and at the end of a string */
       value = value.trim();
 
-      /* Verify strings including 'http' via new URL */
-      if (value.includes('http')) {
+      // Only attempt to parse if the whole string is a URL
+      if (/^https?:\/\/\S+$/.test(value)) {
         value = new URL(value).toString();
       }
     }