diff --git a/app/javascript/flavours/glitch/styles/index.scss b/app/javascript/flavours/glitch/styles/index.scss
new file mode 100644
index 0000000000..9475b4c3c8
--- /dev/null
+++ b/app/javascript/flavours/glitch/styles/index.scss
@@ -0,0 +1,5 @@
+/* This is a compat file so that third-party themes do not have to immediately
+  update their implementation, as the previous `index.scss` has been renamed
+  to `application.scss`. */
+
+@import 'application';