diff --git a/src/components/ThemeSettings/ThemesTab.tsx b/src/components/ThemeSettings/ThemesTab.tsx
index d6e910ba..366c2387 100644
--- a/src/components/ThemeSettings/ThemesTab.tsx
+++ b/src/components/ThemeSettings/ThemesTab.tsx
@@ -20,6 +20,7 @@ import "./themesStyles.css";
 
 import { Settings, useSettings } from "@api/Settings";
 import { classNameFactory } from "@api/Styles";
+import { ErrorCard } from "@components/ErrorCard";
 import { Flex } from "@components/Flex";
 import { Link } from "@components/Link";
 import { AddonCard } from "@components/VencordSettings/AddonCard";
@@ -437,6 +438,15 @@ function ThemesTab() {
 
     return (
         <SettingsTab title="Themes">
+            {IsFirefox && (
+                <ErrorCard>
+                    <Forms.FormTitle tag="h5">Warning</Forms.FormTitle>
+                    <Forms.FormText>
+                        You are using Firefox. Expect the vast majority of themes to not work.
+                        If this is a problem, use a chromium browser or Discord Desktop / Vesktop.
+                    </Forms.FormText>
+                </ErrorCard>
+            )}
             <TabBar
                 type="top"
                 look="brand"