diff --git a/sdk/python/feast/feature_view.py b/sdk/python/feast/feature_view.py
index a833c7a5e5b..a02023f0c52 100644
--- a/sdk/python/feast/feature_view.py
+++ b/sdk/python/feast/feature_view.py
@@ -218,7 +218,8 @@ def to_proto(self) -> FeatureViewProto:
             ttl_duration.FromTimedelta(self.ttl)
 
         batch_source_proto = self.batch_source.to_proto()
-        batch_source_proto.data_source_class_type = f"{self.batch_source.__class__.__module__}.{self.batch_source.__class__.__name__}"
+        if batch_source_proto is not None:
+            batch_source_proto.data_source_class_type = f"{self.batch_source.__class__.__module__}.{self.batch_source.__class__.__name__}"
 
         stream_source_proto = None
         if self.stream_source: