diff --git a/migration/tables/comments.py b/migration/tables/comments.py
index b2dda926..26e48f57 100644
--- a/migration/tables/comments.py
+++ b/migration/tables/comments.py
@@ -57,7 +57,7 @@ async def migrate(entry, storage):
     if entry.get("createdAt"):
         reaction_dict["createdAt"] = date_parse(entry.get("createdAt"))
     shout_oid = entry.get("contentItem")
-    if not shout_oid in storage["shouts"]["by_oid"]:
+    if shout_oid not in storage["shouts"]["by_oid"]:
         if len(storage["shouts"]["by_oid"]) > 0:
             return shout_oid
         else:
diff --git a/resolvers/topics.py b/resolvers/topics.py
index cc8c7d40..2696db80 100644
--- a/resolvers/topics.py
+++ b/resolvers/topics.py
@@ -89,6 +89,6 @@ async def topics_random(_, info, amount=12):
         topic_stat = await TopicStat.get_stat(topic.slug)
         topic.stat = topic_stat
         if topic_stat["shouts"] > 2:
-            normalized_topics.push(topic)
+            normalized_topics.append(topic)
     sample_length = min(len(normalized_topics), amount)
     return random.sample(normalized_topics, sample_length)
diff --git a/services/zine/shoutscache.py b/services/zine/shoutscache.py
index 06062d35..b8f7919d 100644
--- a/services/zine/shoutscache.py
+++ b/services/zine/shoutscache.py
@@ -170,13 +170,13 @@ class ShoutsCache:
 
                 shout = session.query(Shout).filter(Shout.slug == a.shout).first()
 
-                if not shouts_by_author[a.author]:
-                    shouts_by_author[a.author] = []
+                if not shouts_by_author.get(a.user):
+                    shouts_by_author[a.user] = []
 
-                if shout not in shouts_by_author[a.author]:
-                    shouts_by_author[a.author].push(shout)
+                if shout not in shouts_by_author[a.user]:
+                    shouts_by_author[a.user].append(shout)
         async with ShoutsCache.lock:
-            print("[zine.cache indexed by %d authors " % len(shouts_by_author.keys()))
+            print("[zine.cache] indexed by %d authors " % len(shouts_by_author.keys()))
             ShoutsCache.by_author = shouts_by_author
 
     @staticmethod
@@ -188,11 +188,12 @@ class ShoutsCache:
 
                 shout = session.query(Shout).filter(Shout.slug == t.shout).first()
 
-                if not shouts_by_topic[t.topic]:
+                if not shouts_by_topic.get(t.topic):
                     shouts_by_topic[t.topic] = []
 
                 if shout not in shouts_by_topic[t.topic]:
-                    shouts_by_topic[t.topic].push(shout)
+                    shouts_by_topic[t.topic].append(shout)
+
         async with ShoutsCache.lock:
             print("[zine.cache] indexed by %d topics " % len(shouts_by_topic.keys()))
             ShoutsCache.by_topic = shouts_by_topic