diff --git a/lib/searchkick.rb b/lib/searchkick.rb
index 89ccf69..b3ef4c4 100644
--- a/lib/searchkick.rb
+++ b/lib/searchkick.rb
@@ -40,7 +40,7 @@ module Searchkick
     @client ||=
       Elasticsearch::Client.new(
         url: ENV["ELASTICSEARCH_URL"],
-        transport_options: {request: {timeout: timeout}, headers: { content_type: 'application/json' }}
+        transport_options: {request: {timeout: timeout}, headers: {content_type: "application/json"}}
       ) do |f|
         f.use Searchkick::Middleware
       end
diff --git a/lib/searchkick/query.rb b/lib/searchkick/query.rb
index 7060530..0c0addb 100644
--- a/lib/searchkick/query.rb
+++ b/lib/searchkick/query.rb
@@ -29,7 +29,12 @@ module Searchkick
       @term = term
       @options = options
       @match_suffix = options[:match] || searchkick_options[:match] || "analyzed"
-      @type = @routing = @misspellings_below = @highlighted_fields = nil
+
+      # prevent Ruby warnings
+      @type = nil
+      @routing = nil
+      @misspellings_below = nil
+      @highlighted_fields = nil
 
       prepare
     end
--
libgit2 0.21.0