diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -200,7 +200,7 @@
   BOOTSTRAP_FLASH_MSG = {
     success: 'alert-success',
     error: 'alert-danger',
-    alert: 'alert-block',
+    alert: 'alert-danger',
     notice: 'alert-info'
   }