diff --git a/src-ui/src/theme.scss b/src-ui/src/theme.scss
index 588b7e972..ce1eacab9 100644
--- a/src-ui/src/theme.scss
+++ b/src-ui/src/theme.scss
@@ -79,6 +79,7 @@ $form-check-radio-checked-bg-image-dark: url("data:image/svg+xml,<svg xmlns='htt
   --bs-light-rgb: 28, 28, 31;
   --bs-border-color: #47494f;
   --pngx-bg-darker: #101216;
+  --bs-tertiary-bg: var(--pngx-bg-darker);
   --pngx-bg-alt: #242529;
   --pngx-focus-alpha: 0.6;
   --pngx-primary-faded: var(--pngx-primary-darken-15);