1 files changed, 6 insertions, 1 deletions
diff --git a/app/models/service.rb b/app/models/service.rb
index edfb31cbe08..1f3a6520473 100644
--- a/app/models/service.rb
+++ b/app/models/service.rb
@@ -17,7 +17,8 @@ class Service < ActiveRecord::Base
   serialize :properties, JSON
 
   default_value_for :active, false
-  default_value_for :properties, {}
+
+  after_initialize :initialize_properties
 
   belongs_to :project
   has_one :service_hook
@@ -32,6 +33,10 @@ class Service < ActiveRecord::Base
     :common
   end
 
+  def initialize_properties
+    self.properties = {} if properties.nil?
+  end
+
   def title
     # implement inside child
   end