diff --git a/assets/css/lesson.scss b/assets/css/lesson.scss
index 5deb74e5..9a76a6db 100644
--- a/assets/css/lesson.scss
+++ b/assets/css/lesson.scss
@@ -145,7 +145,7 @@ $codeblock-padding: 5px !default;
 .prereq{ @include bkSetup($color-prereq, "\e124"); }
 .solution{ @include bkSetup($color-solution, "\e105"); }
 .testimonial{ @include bkSetup($color-testimonial, "\e143"); }
-.warningerr{ @include bkSetup($color-warningerr, "\e107"); }
+.alert{ @include bkSetup($color-warningerr, "\e107"); }
 
 .callout h3,
 .challenge h3,