diff --git a/ecs-task.cfndsl.rb b/ecs-task.cfndsl.rb
index 1f65763..48b04c9 100644
--- a/ecs-task.cfndsl.rb
+++ b/ecs-task.cfndsl.rb
@@ -21,6 +21,7 @@
     }
 
     definitions, task_volumes, secrets = Array.new(4){[]}
+    task_constraints =[];
     secrets_policy = {}
 
     task_definition = external_parameters.fetch(:task_definition, {})
@@ -253,7 +254,6 @@
     end
 
     # add task placement constraints 
-    task_constraints =[];
     task_placement_constraints = external_parameters.fetch(:task_placement_constraints, [])
     task_placement_constraints.each do |cntr|
       object = {Type: "memberOf"}