1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 98fc69a2a..f9b3ded03 100644
--- a/Makefile
+++ b/Makefile
@@ -504,7 +504,7 @@ ifeq ($(XMLSTARLET),:)
 	@echo "--- Please install xmlstarlet to validate the documentation ---"
 	@echo "---------------------------------------------------------------"
 else
-	$(XMLSTARLET) val $<
+	$(XMLSTARLET) val -d doc/appdocsxml.dtd $<
 endif
 
 update: