diff --git a/lib/custom_wizard/realtime_validation.rb b/lib/custom_wizard/realtime_validation.rb
index 72aa5065..2dcaa50b 100644
--- a/lib/custom_wizard/realtime_validation.rb
+++ b/lib/custom_wizard/realtime_validation.rb
@@ -1,35 +1,37 @@
+# frozen_string_literal: true
+
 class CustomWizard::RealtimeValidation
-    cattr_accessor :types
-      @@types ||= {
-        similar_topics: { types: [:text], component: "similar-topics-validator", backend: true, required_params: [] }
-      }
+  cattr_accessor :types
+  @@types ||= {
+    similar_topics: { types: [:text], component: "similar-topics-validator", backend: true, required_params: [] }
+  }
 
-      class SimilarTopic
-        def initialize(topic)
-          @topic = topic
-        end
-
-        attr_reader :topic
-
-        def blurb
-          Search::GroupedSearchResults.blurb_for(cooked: @topic.try(:blurb))
-        end
-      end
-
-    def self.similar_topics(params, current_user)
-      title = params[:title]
-      raw = params[:raw]
-      categories = params[:categories]
-      date_after = params[:date_after]
-
-      if title.length < SiteSetting.min_title_similar_length || !Topic.count_exceeds_minimum?
-        return []
-      end
-  
-      topics = Topic.similar_to(title, raw, current_user).to_a
-      topics.select! { |t| categories.include?(t.category.id.to_s) } if categories.present?
-      topics.select! { |t| t.created_at > DateTime.parse(date_after) } if date_after.present?
-      topics.map! { |t| SimilarTopic.new(t) }
-      ::ActiveModel::ArraySerializer.new(topics, each_serializer: SimilarTopicSerializer, root: :similar_topics, rest_serializer: true, scope: ::Guardian.new(current_user))
+  class SimilarTopic
+    def initialize(topic)
+      @topic = topic
     end
+
+    attr_reader :topic
+
+    def blurb
+      Search::GroupedSearchResults.blurb_for(cooked: @topic.try(:blurb))
+    end
+  end
+
+  def self.similar_topics(params, current_user)
+    title = params[:title]
+    raw = params[:raw]
+    categories = params[:categories]
+    date_after = params[:date_after]
+
+    if title.length < SiteSetting.min_title_similar_length || !Topic.count_exceeds_minimum?
+      return []
+    end
+
+    topics = Topic.similar_to(title, raw, current_user).to_a
+    topics.select! { |t| categories.include?(t.category.id.to_s) } if categories.present?
+    topics.select! { |t| t.created_at > DateTime.parse(date_after) } if date_after.present?
+    topics.map! { |t| SimilarTopic.new(t) }
+    ::ActiveModel::ArraySerializer.new(topics, each_serializer: SimilarTopicSerializer, root: :similar_topics, rest_serializer: true, scope: ::Guardian.new(current_user))
+  end
 end