diff --git a/conversejs/custom/sass/_peertubetheme.scss b/conversejs/custom/sass/_peertubetheme.scss
index 6f6c3f1a..dea8b86f 100644
--- a/conversejs/custom/sass/_peertubetheme.scss
+++ b/conversejs/custom/sass/_peertubetheme.scss
@@ -27,6 +27,10 @@
     }
   }
 
+  .chatroom .box-flyout .chatroom-body .chatroom-form-container {
+    background-color: var(--peertube-main-background);
+  }
+
   .list-group-item {
     color: var(--peertube-main-foreground);
     background-color: var(--peertube-main-background);