diff --git a/app/controllers/users/private_message_details_controller.rb b/app/controllers/users/private_message_details_controller.rb
index ee17c8d22..fb87504e2 100644
--- a/app/controllers/users/private_message_details_controller.rb
+++ b/app/controllers/users/private_message_details_controller.rb
@@ -7,7 +7,7 @@ class Users::PrivateMessageDetailsController < Users::BaseController
     messages = observed_user.private_messages.without_deleted.where(target: target_user)
 
     @count    = messages.count
-    @messages = messages.order(send_time: :desc).includes(sender: :user_extension)
+    @messages = paginate messages.order(send_time: :desc).includes(sender: :user_extension)
   end
 
   private