diff --git a/lib/oneboxer.rb b/lib/oneboxer.rb
index 871e48c96e5..c77857ad574 100644
--- a/lib/oneboxer.rb
+++ b/lib/oneboxer.rb
@@ -6,6 +6,8 @@ Dir["#{Rails.root}/lib/onebox/engine/*_onebox.rb"].sort.each { |f| require f }
 
 module Oneboxer
   ONEBOX_CSS_CLASS = "onebox"
+  AUDIO_REGEX = /^\.(mp3|og[ga]|opus|wav|m4[abpr]|aac|flac)$/i
+  VIDEO_REGEX = /^\.(mov|mp4|m4v|webm|ogv|3gp)$/i
 
   # keep reloaders happy
   unless defined? Oneboxer::Result
@@ -171,9 +173,9 @@ module Oneboxer
 
   def self.local_upload_html(url)
     case File.extname(URI(url).path || "")
-    when /^\.(mov|mp4|m4v|webm|ogv|3gp)$/i
+    when VIDEO_REGEX
       "<video width='100%' height='100%' controls><source src='#{url}'><a href='#{url}'>#{url}</a></video>"
-    when /^\.(mp3|og[ga]|opus|wav|m4[abpr]|aac|flac)$/i
+    when AUDIO_REGEX
       "<audio controls><source src='#{url}'><a href='#{url}'>#{url}</a></audio>"
     end
   end
diff --git a/lib/search/grouped_search_results.rb b/lib/search/grouped_search_results.rb
index eb3454c9759..4a5dcccf179 100644
--- a/lib/search/grouped_search_results.rb
+++ b/lib/search/grouped_search_results.rb
@@ -80,8 +80,12 @@ class Search
       cooked.scan(URI.regexp(%w{http https})) { urls << $& }
 
       urls.each do |url|
-        cooked.gsub!(url, I18n.t("search.video")) if url.match(/.(mov|mp4|webm|ogv)/)
-        cooked.gsub!(url, I18n.t("search.audio")) if url.match(/.(mp3|ogg|wav|m4a)/)
+        case File.extname(URI(url).path || "")
+        when Oneboxer::VIDEO_REGEX
+          cooked.gsub!(url, I18n.t("search.video"))
+        when Oneboxer::AUDIO_REGEX
+          cooked.gsub!(url, I18n.t("search.audio"))
+        end
       end
 
       if term
diff --git a/spec/lib/search_spec.rb b/spec/lib/search_spec.rb
index e78f75faf44..c3aaa881300 100644
--- a/spec/lib/search_spec.rb
+++ b/spec/lib/search_spec.rb
@@ -22,7 +22,7 @@ describe Search do
 
         link to an audio file: https://somesite.com/content/file123.m4a
 
-        link to a video file: https://somesite.com/content/somethingelse.mov
+        link to a video file: https://somesite.com/content/somethingelse.MOV
       RAW
       result = Search::GroupedSearchResults.blurb_for(cooked)
       expect(result).to eq("link to an external page: https://google.com/?u=bar link to an audio file: #{I18n.t("search.audio")} link to a video file: #{I18n.t("search.video")}")