diff --git a/hail/python/hail/ir/ir.py b/hail/python/hail/ir/ir.py
index 8311818da3e..aed93fdebea 100644
--- a/hail/python/hail/ir/ir.py
+++ b/hail/python/hail/ir/ir.py
@@ -1367,6 +1367,7 @@ def _compute_type(self, env, agg_env, deep_typecheck):
         self.a.compute_type(env, agg_env, deep_typecheck)
         return tstream(self.a.typ.element_type)
 
+
 class StreamZipJoinProducers(IR):
     @typecheck_method(contexts=IR,
                       ctx_name=str,