diff --git a/src/misc/utils.ts b/src/misc/utils.ts
index 585cdeff835..6c1764c2054 100644
--- a/src/misc/utils.ts
+++ b/src/misc/utils.ts
@@ -150,6 +150,10 @@ export class Utils {
         });
     }
 
+    static isGuid(id: string) {
+        return RegExp(/^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/, 'i').test(id);
+    }
+
     static getHostname(uriString: string): string {
         const url = Utils.getUrl(uriString);
         try {