diff --git a/ui/src/themes/gruvboxDark.js b/ui/src/themes/gruvboxDark.js
index 7e0b4eb6a..0f4cbd7c4 100644
--- a/ui/src/themes/gruvboxDark.js
+++ b/ui/src/themes/gruvboxDark.js
@@ -84,8 +84,6 @@ export default {
       root: {
         color: '#ebdbb2',
       },
-    },
-    Mui: {
       error: {
         color: '#cc241d',
       },