diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index 36f8f4d4b..277a99f04 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -102,10 +102,9 @@ DISABLE_INDEX          = NO
 FULL_SIDEBAR           = NO
 HTML_COLORSTYLE        = LIGHT # required with Doxygen >= 1.9.5
 HTML_HEADER            = @SRCDIR@/doc/header.html
-HTML_EXTRA_STYLESHEET  = @SRCDIR@/doc/doxygen-awesome-css/doxygen-awesome.css \
+HTML_EXTRA_STYLESHEET  = @SRCDIR@/doc/doxygen-awesome-css/doxygen-awesome.css
 HTML_EXTRA_FILES       = @SRCDIR@/doc/doxygen-awesome-css/doxygen-awesome-darkmode-toggle.js \
                          @SRCDIR@/doc/doxygen-awesome-css/doxygen-awesome-fragment-copy-button.js \
                          @SRCDIR@/doc/doxygen-awesome-css/doxygen-awesome-paragraph-link.js \
-                         @SRCDIR@/doc/doxygen-awesome-css/doxygen-custom/toggle-alternative-theme.js \
                          @SRCDIR@/doc/doxygen-awesome-css/doxygen-awesome-interactive-toc.js \
                          @SRCDIR@/doc/doxygen-awesome-css/doxygen-awesome-tabs.js