diff --git a/app/controllers/management/object_types_controller.rb b/app/controllers/management/object_types_controller.rb
index d37292555b05bbfe5ed0819ec93355c8064ed164..8abc4fda32d868072cb2330c9abeb4c63c2923d3 100644
--- a/app/controllers/management/object_types_controller.rb
+++ b/app/controllers/management/object_types_controller.rb
@@ -15,12 +15,14 @@ class Management::ObjectTypesController < ManagementController
 
   # GET /management/object_types/1/edit
   def edit
+
   end
 
+
   # POST /management/object_types
   # POST /management/object_types.json
   def create
-    @object_type = ::ObjectType.new(object_type_params)
+    @object_type = ::ObjectType.new(sanitazed_params)
 
     respond_to do |format|
       if @object_type.save
@@ -37,7 +39,7 @@ class Management::ObjectTypesController < ManagementController
   # PATCH/PUT /management/object_types/1.json
   def update
     respond_to do |format|
-      if @object_type.update(object_type_params)
+      if @object_type.update(sanitazed_params)
         format.html { redirect_to management_object_types_path, notice: 'Object type was successfully updated.' }
         format.json { render :show, status: :ok, location: management_object_types_path }
       else
@@ -59,7 +61,7 @@ class Management::ObjectTypesController < ManagementController
 
   private
 
-  # get all the mime types
+  # Get all the mime types
   def get_mime_types
     @mime_types = MimeType.all
   end
@@ -70,6 +72,18 @@ class Management::ObjectTypesController < ManagementController
 
   # Never trust parameters from the scary internet, only allow the white list through.
   def object_type_params
-    params.require(:object_type).permit(:name)
+    params.require(:object_type).permit(:name, mime_types: [])
+  end
+
+  # Build mimetypes
+  def sanitazed_params
+    _params = object_type_params
+    _params[:mime_types] = []
+    unless object_type_params[:mime_types].blank?
+      object_type_params[:mime_types].each do |mime_type|
+        _params[:mime_types] << MimeType.find(mime_type)
+      end
+    end
+    _params
   end
 end
diff --git a/app/helpers/management/object_types_helper.rb b/app/helpers/management/object_types_helper.rb
index 136947e491a79c1a576abf41d8833b78c302a2b5..19b4fe1383986675f5c274ad08a1d474dc5ff39a 100644
--- a/app/helpers/management/object_types_helper.rb
+++ b/app/helpers/management/object_types_helper.rb
@@ -2,4 +2,8 @@ module Management::ObjectTypesHelper
   def show_delete_button?(object_type)
     object_type.name =~ /outros/i ? false : true
   end
+
+  def mime_types(mime_types = [])
+    mime_types.map { |mime_type| mime_type.extension }.reduce { |i, ext| i + ', '+ ext }
+  end
 end
diff --git a/app/views/management/object_types/index.html.erb b/app/views/management/object_types/index.html.erb
index 3a773e718333369ec426af882e74737bb7845df1..4f43721c78d17e96c6da59ae8aa86a44a54bd9b2 100644
--- a/app/views/management/object_types/index.html.erb
+++ b/app/views/management/object_types/index.html.erb
@@ -14,7 +14,7 @@
   <% @object_types.each do |object_type| %>
       <tr>
         <td><%= object_type.name %></td>
-        <td><%= object_type.mime_types.to_a %></td>
+        <td><%= mime_types object_type.mime_types %></td>
         <td class="ls-txt-right ls-regroup"><%= link_to 'Editar', edit_management_object_type_path(object_type) %>
         <td>
           <% if show_delete_button? object_type %>