diff --git a/_graph_templates/rose_24hrs.png.xml b/_graph_templates/rose_24hrs.png.xml
index 7040be7..9477108 100644
--- a/_graph_templates/rose_24hrs.png.xml
+++ b/_graph_templates/rose_24hrs.png.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <graph xmlns:xi="http://www.w3.org/2001/XInclude">
-  <fileformat>pngcairo font "arial,8"</fileformat>
+  <xi:include href="includes/format_png.xml" parse="xml" />
   <title>Wind über die letzten 24h (km/h)</title>
   <duration>hours=24</duration>
   <windrose>
diff --git a/_graph_templates/rose_24hrs.svg.xml b/_graph_templates/rose_24hrs.svg.xml
index 0316711..8a70567 100644
--- a/_graph_templates/rose_24hrs.svg.xml
+++ b/_graph_templates/rose_24hrs.svg.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <graph xmlns:xi="http://www.w3.org/2001/XInclude">
-  <fileformat>svg font "arial,10"</fileformat>
+  <xi:include href="includes/format_svg.xml" parse="xml" />
   <title>Wind über die letzten 24h (km/h)</title>
   <duration>hours=24</duration>
   <windrose>
diff --git a/_graph_templates/rose_7days_nights.png.xml b/_graph_templates/rose_7days_nights.png.xml
index 439d8d0..50eb561 100644
--- a/_graph_templates/rose_7days_nights.png.xml
+++ b/_graph_templates/rose_7days_nights.png.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <graph xmlns:xi="http://www.w3.org/2001/XInclude">
   <title>Wind über die letzten 7 Tage (km/h)</title>
-  <fileformat>pngcairo font "arial,8"</fileformat>
+  <xi:include href="includes/format_png.xml" parse="xml" />
   <duration>hours=24 * 7</duration>
   <windrose>
     <title>Tagsüber</title>
diff --git a/_graph_templates/rose_7days_nights.svg.xml b/_graph_templates/rose_7days_nights.svg.xml
index 0aabaf3..cb8826a 100644
--- a/_graph_templates/rose_7days_nights.svg.xml
+++ b/_graph_templates/rose_7days_nights.svg.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <graph xmlns:xi="http://www.w3.org/2001/XInclude">
   <title>Wind über die letzten 7 Tage (km/h)</title>
-  <fileformat>svg font "arial,10"</fileformat>
+  <xi:include href="includes/format_svg.xml" parse="xml" />
   <duration>hours=24 * 7</duration>
   <windrose>
     <title>Tagsüber</title>
diff --git a/_graph_templates/tweet.png.xml b/_graph_templates/tweet.png.xml
index 43aff9c..98cc299 100644
--- a/_graph_templates/tweet.png.xml
+++ b/_graph_templates/tweet.png.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <graph xmlns:xi="http://www.w3.org/2001/XInclude">
   <size>400, 220</size>
-  <fileformat>pngcairo font "arial,8"</fileformat>
+  <xi:include href="includes/format_png.xml" parse="xml" />
   <lmargin>6</lmargin>
   <rmargin>7</rmargin>
   <duration>hours=24</duration>