diff --git a/server/models/Collection.ts b/server/models/Collection.ts
index 4e0325e2a..418540cbe 100644
--- a/server/models/Collection.ts
+++ b/server/models/Collection.ts
@@ -168,7 +168,7 @@ class Collection extends ParanoidModel {
 
   @Length({
     max: 50,
-    msg: `index must 50 characters or less`,
+    msg: `index must be 50 characters or less`,
   })
   @Column
   index: string | null;