diff --git a/module.yaml b/module.yaml
index b21926c..ddd7e8d 100644
--- a/module.yaml
+++ b/module.yaml
@@ -19,7 +19,6 @@ spec:
           port: 80
           scheme: grpc
         protocol: fybrik-arrow-flight
-        dataformat: arrow
       supportedInterfaces:
         - source:
             protocol: s3
@@ -37,7 +36,6 @@ spec:
           port: 80
           scheme: grpc
         protocol: fybrik-arrow-flight
-        dataformat: arrow
       supportedInterfaces:
         - sink:
             protocol: s3