diff --git a/app/models/notification_services/flowdock_service.rb b/app/models/notification_services/flowdock_service.rb
index 3350fb5..c84dec1 100644
--- a/app/models/notification_services/flowdock_service.rb
+++ b/app/models/notification_services/flowdock_service.rb
@@ -21,7 +21,7 @@ if defined? Flowdock
     end
 
     def create_notification(problem)
-      flow = Flowdock::Flow.new(:api_token => api_token, :source => "Errbit", :from => {:name => "Errbit", :address => 'support@flowdock.com'})
+      flow = Flowdock::Flow.new(:api_token => api_token, :source => "Errbit", :from => {:name => "Errbit", :address => ENV['ERRBIT_EMAIL_FROM'] || 'support@flowdock.com'})
       subject = "[#{problem.environment}] #{problem.message.to_s.truncate(100)}"
       url = app_problem_url problem.app, problem
       flow.push_to_team_inbox(:subject => subject, :content => content(problem, url), :project => project_name(problem), :link => url)
diff --git a/docs/ENV-VARIABLES.md b/docs/ENV-VARIABLES.md
index 8c6640b..784496b 100644
--- a/docs/ENV-VARIABLES.md
+++ b/docs/ENV-VARIABLES.md
@@ -69,3 +69,9 @@ variable.
 * MONGOID_PASSWORD
 * MONGOID_DATABASE
 
+## Flowdock notification adapter
+
+If you noticed default Gravatar icon in your Flowdock notifications you
+may want to [add Errbit icon](http://gravatar.com) for email that is
+set in ERRBIT_EMAIL_FROM.
+You don't need to approve or authorize it on Flowdock because it is used only for an icon.
--
libgit2 0.21.2