diff --git a/resources/assets/stylesheets/scss/navigation.scss b/resources/assets/stylesheets/scss/navigation.scss
index 63af7829b47c6fd3c7f2009a477e6a9f16d27141..5884b04f13f8504873c2b45dd1805b7d39d1acf3 100644
--- a/resources/assets/stylesheets/scss/navigation.scss
+++ b/resources/assets/stylesheets/scss/navigation.scss
@@ -272,6 +272,8 @@ body.fixed {
         display: none;
 
         img {
+            filter: contrast(0) brightness(2);
+
             @include square(16px);
             margin-right: 0.8em;
         }