diff --git a/lib/Korap.pm b/lib/Korap.pm
index 0dc9655..b8b60a3 100644
--- a/lib/Korap.pm
+++ b/lib/Korap.pm
@@ -48,6 +48,7 @@
       '/sass/table.scss',
       '/sass/pagination.scss',
       '/sass/kwic-4.0.scss',
+      '/sass/alertify.scss',
       '/css/media.css',
       '/css/font-awesome.min.css',
       '/css/highlight.css'
diff --git a/lib/Korap/Plugin/KorapSearch.pm b/lib/Korap/Plugin/KorapSearch.pm
index 171c6e1..d42ae61 100644
--- a/lib/Korap/Plugin/KorapSearch.pm
+++ b/lib/Korap/Plugin/KorapSearch.pm
@@ -169,15 +169,20 @@
 	  $c->chi->set('total-' . $cache_url => $json->{totalResults}, '30min');
 	};
 
+	if ($json->{warning}) {
+	  $c->notify(warn => $json->{warning});
+	};
+
 	if ($json->{error}) {
-	  $c->notify('error' => $json->{error});
+	  $c->notify(error => $json->{error});
 	};
       }
 
       # Request failed
       else {
 	my $res = $tx->res;
-	$c->notify('error' =>  $res->{code} . ': ' . $res->{message} . ' (remote)');
+	$c->notify(error =>  ($res->{code} ? $res->{code} . ': ' : '') .
+		     $res->{message} . ' (remote)');
       };
 
       # Run embedded template
diff --git a/public/sass/alertify.scss b/public/sass/alertify.scss
new file mode 100644
index 0000000..498a072
--- /dev/null
+++ b/public/sass/alertify.scss
@@ -0,0 +1,5 @@
+@import "colors";
+
+article.alertify-log-warn {
+  background-color: $dark-orange;
+}
\ No newline at end of file