diff --git a/tools/menu-schema.json b/tools/menu-schema.json
index eddafe65..417c789e 100644
--- a/tools/menu-schema.json
+++ b/tools/menu-schema.json
@@ -28,7 +28,7 @@
             "type": "string",
             "title": "Schedule ID",
             "description": "Immutable and unique identifier for this event/schedule, derived from original filename",
-            "pattern": "^[a-z0-9-_]{4,}$",
+            "pattern": "^[a-z0-9-_]{4,32}$",
             "examples": [
               "fosdem_2003"
             ]