diff --git a/fsfe.xsl b/fsfe.xsl
index aca80ad8ba..cbcad1c3f2 100644
--- a/fsfe.xsl
+++ b/fsfe.xsl
@@ -2,7 +2,7 @@
 
 <xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-  exclude-result-prefixes="xsltsl">
+  exclude-result-prefixes="doc str dt">
 
   <xsl:import href="tools/xsltsl/translations.xsl" />
   <xsl:import href="tools/xsltsl/static-elements.xsl" />