diff --git a/plugins/lattes_curriculum/lib/ext/person.rb b/plugins/lattes_curriculum/lib/ext/person.rb
index 0d6b565..b5aac79 100755
--- a/plugins/lattes_curriculum/lib/ext/person.rb
+++ b/plugins/lattes_curriculum/lib/ext/person.rb
@@ -4,16 +4,28 @@ class Person
 
   attr_accessible :lattes_url, :academic_info_attributes
 
-  has_one :academic_info, :dependent=>:delete
+  has_one :academic_info
+
+  after_destroy do |person|
+    if !person.environment.nil? &&
+person.environment.plugin_enabled?(LattesCurriculumPlugin) &&
+!person.academic_info.nil?
+      person.academic_info.destroy
+    end
+  end
 
   accepts_nested_attributes_for :academic_info
 
   def lattes_url
-    self.academic_info.nil? ? nil : self.academic_info.lattes_url
+    if self.environment && self.environment.plugin_enabled?(LattesCurriculumPlugin)
+      self.academic_info.nil? ? nil : self.academic_info.lattes_url
+    end
   end
 
   def lattes_url= value
-    self.academic_info.lattes_url = value unless self.academic_info.nil?
+    if self.environment && self.environment.plugin_enabled?(LattesCurriculumPlugin)
+      self.academic_info.lattes_url = value unless self.academic_info.nil?
+    end
   end
 
   FIELDS << "lattes_url"
diff --git a/plugins/lattes_curriculum/test/unit/person_test.rb b/plugins/lattes_curriculum/test/unit/person_test.rb
new file mode 100644
index 0000000..287ae4c
--- /dev/null
+++ b/plugins/lattes_curriculum/test/unit/person_test.rb
@@ -0,0 +1,26 @@
+require "test_helper"
+
+class PersonTest < ActiveSupport::TestCase
+
+  def setup
+    @environment = Environment.default
+    @environment.enable_plugin(LattesCurriculumPlugin)
+  end
+
+  attr_reader :environment
+
+  should 'destroy academic info if person is removed' do
+    person = fast_create(Person)
+    academic_info = fast_create(AcademicInfo, :person_id => person.id,
+:lattes_url => 'http://lattes.cnpq.br/2193972715230')
+
+    assert_difference 'AcademicInfo.count', -1 do
+      person.destroy
+    end
+  end
+
+  should 'add lattes_url field to Person' do
+    assert_includes Person.fields, 'lattes_url'
+  end
+
+end
--
libgit2 0.21.2