diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
index 0e5b00e8f..7a0b2f9a3 100644
--- a/app/javascript/styles/mastodon/forms.scss
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -587,7 +587,7 @@ code {
 
   &.alert {
     border: 1px solid rgba($error-value-color, 0.5);
-    background: rgba($error-value-color, 0.25);
+    background: rgba($error-value-color, 0.1);
     color: $error-value-color;
   }