diff --git a/ui/src/Components/SilenceModal/index.stories.js b/ui/src/Components/SilenceModal/index.stories.js
index ffe501cbf..50374fc30 100644
--- a/ui/src/Components/SilenceModal/index.stories.js
+++ b/ui/src/Components/SilenceModal/index.stories.js
@@ -40,6 +40,9 @@ storiesOf("SilenceModal", module)
     const settingsStore = new Settings();
     const silenceFormStore = new SilenceFormStore();
 
+    alertStore.info.authentication.enabled = true;
+    alertStore.info.authentication.username = "me@example.com";
+
     alertStore.data.upstreams = {
       clusters: { default: ["default"] },
       instances: [
@@ -72,7 +75,7 @@ storiesOf("SilenceModal", module)
       )
     ];
     silenceFormStore.data.addEmptyMatcher();
-    silenceFormStore.data.author = "me@example.com";
+    silenceFormStore.data.author = "john@example.com";
     silenceFormStore.data.comment = "fake silence";
     silenceFormStore.data.resetStartEnd();
 
diff --git a/ui/src/Styles/DarkTheme.scss b/ui/src/Styles/DarkTheme.scss
index 066614883..612320e1b 100644
--- a/ui/src/Styles/DarkTheme.scss
+++ b/ui/src/Styles/DarkTheme.scss
@@ -47,6 +47,7 @@ $pagination-disabled-bg: darken($gray-800, 2%);
 
 $input-color: $white;
 $input-bg: $secondary;
+$input-disabled-bg: $gray-800;
 $input-group-addon-bg: $gray-800;
 $input-border-color: $secondary;