diff --git a/static/themes/default/css/main.css b/static/themes/default/css/main.css
index 43882ee43..016a2cb47 100644
--- a/static/themes/default/css/main.css
+++ b/static/themes/default/css/main.css
@@ -8,11 +8,6 @@
     --progress-color: #3498db; /* Blue */
     --freedombox-navbar-color: white;
 
-    /* Missing variables in Bootstrap 5.2 copied from Bootstrap 5.3 */
-    --bs-secondary-bg: #e9ecef;
-    --bs-form-invalid-color: #dc3545;
-    --bs-form-invalid-border-color: #dc3545;
-    --bs-secondary-border-subtle: #c4c8cb;
 }
 
 /*