diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index b2b6366..83966e9 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -187,8 +187,11 @@
 
 ###
 # Rule to convert a .c file to inline XML documentation
+       gen_xml = :
+ quiet_gen_xml = echo '  GEN     $@'
+silent_gen_xml = :
 %.xml: %.c
-	@echo '  GEN     $@'
+	@$($(quiet)gen_xml)
 	@(                            \
 	   echo "<programlisting>";   \
 	   expand --tabs=8 < $< |     \