diff --git a/src/_zkapauthorizer/_storage_client.py b/src/_zkapauthorizer/_storage_client.py
index 8b41b21b6b9115104b51380f479459ab1e7cfa4e..622299f6bd171f8905433aa4b48550e643efdca4 100644
--- a/src/_zkapauthorizer/_storage_client.py
+++ b/src/_zkapauthorizer/_storage_client.py
@@ -40,9 +40,9 @@ from .storage_common import (
     add_lease_message,
     allocate_buckets_message,
     get_required_new_passes_for_mutable_write,
+    get_write_sharenums,
     pass_value_attribute,
     required_passes,
-    get_write_sharenums,
     slot_testv_and_readv_and_writev_message,
 )
 
diff --git a/src/_zkapauthorizer/_storage_server.py b/src/_zkapauthorizer/_storage_server.py
index 367120a5ce4d1b9663a67683d723bf8618d05505..e54f3780787bf500937188b512411cc3b027e074 100644
--- a/src/_zkapauthorizer/_storage_server.py
+++ b/src/_zkapauthorizer/_storage_server.py
@@ -54,9 +54,9 @@ from .storage_common import (
     add_lease_message,
     allocate_buckets_message,
     get_required_new_passes_for_mutable_write,
+    get_write_sharenums,
     pass_value_attribute,
     required_passes,
-    get_write_sharenums,
     slot_testv_and_readv_and_writev_message,
 )
 
diff --git a/src/_zkapauthorizer/storage_common.py b/src/_zkapauthorizer/storage_common.py
index 5060f3a0cd82d25579d6b01fa4bb223fad4b5184..908a6ec755e6499b77ac28a4fbaeb15d1d04d5d8 100644
--- a/src/_zkapauthorizer/storage_common.py
+++ b/src/_zkapauthorizer/storage_common.py
@@ -215,7 +215,9 @@ def get_write_sharenums(tw_vectors):
         # non-None, non-0.
         #
         # Related to #222.
-        sharenum for (sharenum, (test, data, new_length)) in tw_vectors.items() if data
+        sharenum
+        for (sharenum, (test, data, new_length)) in tw_vectors.items()
+        if data
     )