diff --git a/src/Logic/Tags/Tag.ts b/src/Logic/Tags/Tag.ts
index a941ab427e..40bb10c1cd 100644
--- a/src/Logic/Tags/Tag.ts
+++ b/src/Logic/Tags/Tag.ts
@@ -19,6 +19,9 @@ export class Tag extends TagsFilter {
         if (value === undefined) {
             throw `Invalid value while constructing a Tag with key '${key}': value is undefined`
         }
+        if(value.length > 255 || key.length > 255){
+            throw "Invalid tag: length is over 255"
+        }
         if (value === "*") {
             console.warn(`Got suspicious tag ${key}=*   ; did you mean ${key}~* ?`)
         }