diff --git a/ruby/lib/jam_ruby/models/music_session_history.rb b/ruby/lib/jam_ruby/models/music_session_history.rb
index c72634c5a..8b3c787d3 100644
--- a/ruby/lib/jam_ruby/models/music_session_history.rb
+++ b/ruby/lib/jam_ruby/models/music_session_history.rb
@@ -149,11 +149,16 @@ module JamRuby
       hist.end_history if hist
     end
 
+    def remove_non_alpha_num(token)
+      token.gsub(/[^0-9A-Za-z]/, '')
+    end
+
     private
     def generate_share_token
       self.share_token = loop do
         token = SecureRandom.urlsafe_base64(SHARE_TOKEN_LENGTH, false)
-        token.gsub!(/[^0-9A-Za-z]/, '').upcase!
+        token = remove_non_alpha_num(token)
+        token.upcase!
         break token unless MusicSessionHistory.exists?(share_token: token)
       end
     end