diff --git a/lib/fragment_client.rb b/lib/fragment_client.rb
index 50ea0e6..db318ed 100644
--- a/lib/fragment_client.rb
+++ b/lib/fragment_client.rb
@@ -166,6 +166,7 @@ def create_token
     uri = URI.parse(@oauth_url.to_s)
     post = Net::HTTP::Post.new(uri.request_uri)
     post.basic_auth(@client_id, @client_secret)
+    post.content_type = "application/x-www-form-urlencoded"
     post.body = format('grant_type=client_credentials&scope=%<scope>s&client_id=%<id>s', scope: @oauth_scope,
                                                                                          id: @client_id)