diff --git a/doc/Makefile.am b/doc/Makefile.am
index cee8752..c8fd05e 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -10,7 +10,7 @@ clean-local:
 .PHONY: doxygen
 
 doc_src= $(shell find . -name "html" -printf "%P\n")
-EXTRA_DIST = $(doc_src) libevdev.doxygen
+EXTRA_DIST = $(doc_src) libevdev.doxygen libevdev.css
 endif
 
 dist_noinst_DATA = libevdev.doxygen.in