diff --git a/deltachat-ffi/doxygen-dark-theme b/deltachat-ffi/doxygen-dark-theme
deleted file mode 160000
index 101c1f915..000000000
--- a/deltachat-ffi/doxygen-dark-theme
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 101c1f91523b9f2ea6932b1d7b727e67a4cd7171