diff --git a/ws/Docbook/CustomLayer/slide/reveal.css.patch b/ws/Docbook/CustomLayer/slide/reveal.css.patch
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..bff8de77978925173f0fb5b6a33cf3394b03954f 100644
--- a/ws/Docbook/CustomLayer/slide/reveal.css.patch
+++ b/ws/Docbook/CustomLayer/slide/reveal.css.patch
@@ -0,0 +1,20 @@
+--- reveal.css.orig	2017-09-24 09:53:23.103719188 +0200
++++ reveal.css	2017-09-24 09:53:06.663973053 +0200
+@@ -1,3 +1,8 @@
++/*
++ *  patched by: /usr/share/hdm-docbook-xsl/CustomLayer/slide/reveal.css.patch
++ *  source file: /usr/share/reveal.js/css/reveal.css
++ */
++
+ /*!
+  * reveal.js
+  * http://lab.hakim.se/reveal-js
+@@ -26,7 +31,7 @@
+   border: 0;
+   font-size: 100%;
+   font: inherit;
+-  vertical-align: baseline; }
++  vertical-align: top; }
+ 
+ .reveal article, .reveal aside, .reveal details, .reveal figcaption, .reveal figure,
+ .reveal footer, .reveal header, .reveal hgroup, .reveal menu, .reveal nav, .reveal section {
diff --git a/ws/Docbook/CustomLayer/webhelp/reveal.css.patch b/ws/Docbook/CustomLayer/webhelp/reveal.css.patch
deleted file mode 100644
index bdc0fdf00640a910a982c40203ffef2406cadee4..0000000000000000000000000000000000000000
--- a/ws/Docbook/CustomLayer/webhelp/reveal.css.patch
+++ /dev/null
@@ -1,20 +0,0 @@
---- reveal.css.orig	2017-09-20 21:41:43.190984695 +0200
-+++ reveal.css	2017-09-21 17:42:07.671682270 +0200
-@@ -1,3 +1,8 @@
-+/*
-+ *  patched by: /usr/share/hdm-docbook-xsl/CustomLayer/webhelp/reveal.css.patch 
-+ *  source file: /usr/share/reveal.js/css/reveal.css
-+ */
-+
- /*!
-  * reveal.js
-  * http://lab.hakim.se/reveal-js
-@@ -26,7 +31,7 @@
-   border: 0;
-   font-size: 100%;
-   font: inherit;
--  vertical-align: baseline; }
-+  vertical-align: top; }
- 
- .reveal article, .reveal aside, .reveal details, .reveal figcaption, .reveal figure,
- .reveal footer, .reveal header, .reveal hgroup, .reveal menu, .reveal nav, .reveal section {
diff --git a/ws/Docbook/Preprocess/make.rules b/ws/Docbook/Preprocess/make.rules
index bf449887d49276ceac157e7aa59c56e6b48cc912..8b759a92061e8ae71ff6d969ca4095d6ac1189d8 100644
--- a/ws/Docbook/Preprocess/make.rules
+++ b/ws/Docbook/Preprocess/make.rules
@@ -109,7 +109,6 @@ SAXONCMD=java -cp "${DBOOK_XSL}/tools/lib/saxon9he.jar:/usr/share/java/xercesImp
 	${SAXON6CMD} $< ${DBOOK_XSL_CUSTOM}/webhelp/webhelpHdm.xsl ${dbookXslWebhelpParam}
 	rsync -a ${DBOOK_XSL}/webhelp/template/* .     # Images, Css
 	cd common/css; patch < ${DBOOK_XSL_CUSTOM}/webhelp/positioning.css.patch
-	cd reveal.js/css; patch < ${DBOOK_XSL_CUSTOM}/webhelp/reveal.css.patch
 	cp ${DBOOK_XSL_CUSTOM}/webhelp/common/images/*.svg common/images
 	cp ${DBOOK_XSL_CUSTOM}/webhelp/common/images/favicon.ico .
 	rsync -a --exclude='.git' /usr/share/hdmwebhelp/extern/libs/mathjax .