diff --git a/v3.0.yml b/v3.0.yml
index 2c33978..150bd80 100644
--- a/v3.0.yml
+++ b/v3.0.yml
@@ -1146,7 +1146,6 @@ paths:
         - teacher
         in: query
         name: role
-        type: string
       - in: query
         name: limit
         type: integer