diff --git a/broker/jfjoch_api.yaml b/broker/jfjoch_api.yaml
index bc32b170..6a565b2c 100644
--- a/broker/jfjoch_api.yaml
+++ b/broker/jfjoch_api.yaml
@@ -37,9 +37,9 @@ components:
     binning:
       in: query
       name: binning
-      default: 1
       required: false
       schema:
+        default: 1
         type: integer
       description: Binning of frames for the plot (0 = default binning)
     compression: