diff --git a/app/models/user.rb b/app/models/user.rb
index 8c6531b..bd18bc9 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -359,6 +359,6 @@ class User < ActiveRecord::Base
 
     def delay_activation_check
       return if person.is_template?
-      Delayed::Job.enqueue(UserActivationJob.new(self.id), {:priority => 0, :run_at => 72.hours.from_now})
+      Delayed::Job.enqueue(UserActivationJob.new(self.id), {:priority => 0, :run_at => (NOOSFERO_CONF['hours_until_user_activation_check'] || 72).hours.from_now})
     end
 end
diff --git a/config/noosfero.yml.dist b/config/noosfero.yml.dist
index 86aafd2..e4df627 100644
--- a/config/noosfero.yml.dist
+++ b/config/noosfero.yml.dist
@@ -9,6 +9,7 @@ development:
   googlemaps_initial_zoom: 4
   exception_recipients: [admin@example.com]
   max_upload_size: 5MB
+  hours_until_user_activation_check: 72
 
 test:
 
diff --git a/test/unit/user_test.rb b/test/unit/user_test.rb
index 22aceac..9f508d4 100644
--- a/test/unit/user_test.rb
+++ b/test/unit/user_test.rb
@@ -526,9 +526,19 @@ class UserTest < ActiveSupport::TestCase
     assert user.activated?
   end
 
-  should 'delay activation check' do
+  should 'delay activation check with default time' do
     user = new_user
-    assert_match /UserActivationJob/, Delayed::Job.last.handler
+    job = Delayed::Job.last
+    assert_match /UserActivationJob/, job.handler
+    assert_equal 72, ((job.run_at - user.created_at)/1.hour).round
+  end
+
+  should 'delay activation check with custom time' do
+    NOOSFERO_CONF.stubs(:[]).with('hours_until_user_activation_check').returns(240)
+    user = new_user
+    job = Delayed::Job.last
+    assert_match /UserActivationJob/, job.handler
+    assert_equal 240, ((job.run_at - user.created_at)/1.hour).round
   end
 
   should 'not create job to check activation to template users' do
--
libgit2 0.21.2