diff --git a/app/models/topic.rb b/app/models/topic.rb
index db9dd21d3c6..c9713bef3e2 100644
--- a/app/models/topic.rb
+++ b/app/models/topic.rb
@@ -392,9 +392,10 @@ class Topic < ActiveRecord::Base
     end
   end
 
-  def self.visible_post_types(viewed_by = nil)
+  def self.visible_post_types(viewed_by = nil, include_moderator_actions: true)
     types = Post.types
-    result = [types[:regular], types[:moderator_action], types[:small_action]]
+    result = [types[:regular]]
+    result += [types[:moderator_action], types[:small_action]] if include_moderator_actions
     result << types[:whisper] if viewed_by&.staff?
     result
   end
diff --git a/app/models/user_summary.rb b/app/models/user_summary.rb
index 1cd0b020684..f30507117d0 100644
--- a/app/models/user_summary.rb
+++ b/app/models/user_summary.rb
@@ -25,12 +25,7 @@ class UserSummary
   end
 
   def replies
-    Post
-      .joins(:topic)
-      .includes(:topic)
-      .secured(@guardian)
-      .merge(Topic.listable_topics.visible.secured(@guardian))
-      .where(user: @user)
+    post_query
       .where('post_number > 1')
       .order('posts.like_count DESC, posts.created_at DESC')
       .limit(MAX_SUMMARY_RESULTS)
@@ -88,13 +83,8 @@ class UserSummary
   def most_replied_to_users
     replied_users = {}
 
-    Post
-      .joins(:topic)
+    post_query
       .joins('JOIN posts replies ON posts.topic_id = replies.topic_id AND posts.reply_to_post_number = replies.post_number')
-      .includes(:topic)
-      .secured(@guardian)
-      .merge(Topic.listable_topics.visible.secured(@guardian))
-      .where(user: @user)
       .where('replies.user_id <> ?', @user.id)
       .group('replies.user_id')
       .order('COUNT(*) DESC')
@@ -135,13 +125,7 @@ class UserSummary
   end
 
   def top_categories
-    post_count_query = Post
-      .joins(:topic)
-      .includes(:topic)
-      .secured(@guardian)
-      .merge(Topic.listable_topics.visible.secured(@guardian))
-      .where(user: @user)
-      .group('topics.category_id')
+    post_count_query = post_query.group('topics.category_id')
 
     top_categories = {}
 
@@ -211,4 +195,13 @@ protected
     end.compact.sort_by { |u| -u[:count] }
   end
 
+  def post_query
+    Post
+      .joins(:topic)
+      .includes(:topic)
+      .where('posts.post_type IN (?)', Topic.visible_post_types(@guardian&.user, include_moderator_actions: false))
+      .merge(Topic.listable_topics.visible.secured(@guardian))
+      .where(user: @user)
+  end
+
 end
diff --git a/spec/models/user_summary_spec.rb b/spec/models/user_summary_spec.rb
index 8847fc2a3a0..4126632075f 100644
--- a/spec/models/user_summary_spec.rb
+++ b/spec/models/user_summary_spec.rb
@@ -78,4 +78,19 @@ describe UserSummary do
     expect(summary.top_categories.length).to eq(UserSummary::MAX_SUMMARY_RESULTS)
     expect(summary.top_categories.first[:id]).to eq(top_category.id)
   end
+
+  it "excludes moderator action posts" do
+    topic = create_post.topic
+    user = topic.user
+    create_post(user: user, topic: topic)
+    Fabricate(:small_action, topic: topic, user: user)
+
+    summary = UserSummary.new(user, Guardian.new)
+
+    expect(summary.topics.length).to eq(1)
+    expect(summary.replies.length).to eq(1)
+    expect(summary.top_categories.length).to eq(1)
+    expect(summary.top_categories.first[:topic_count]).to eq(1)
+    expect(summary.top_categories.first[:post_count]).to eq(1)
+  end
 end