diff --git a/Makefile b/Makefile
index c5387a8..f46f45d 100644
--- a/Makefile
+++ b/Makefile
@@ -15,7 +15,7 @@
 MAKE ?= make -j $(shell nproc)
 KORAPXML2CONLLU_HEAP ?= $(shell echo "$$(($(MAX_THREADS) * 2500))")
 KORAPXML2CONLLU ?= java -Xmx$(KORAPXML2CONLLU_HEAP)m -jar lib/korapxml2conllu.jar
-SAXON ?= java -Djava.util.logging.config.file=/logging.properties -cp lib/saxon-ee-12.5.jar:lib/xmlresolver-5.2.2.jar:lib/textclassifier.jar:lib/xmlresolver-5.2.2-data.jar net.sf.saxon.Transform -expand:off
+SAXON ?= java -Djava.util.logging.config.file=/logging.properties -cp lib/saxon-ee-12.5.jar:lib/xmlresolver-5.2.2.jar:lib/textclassifier.jar:lib/xmlresolver-5.2.2-data.jar net.sf.saxon.Transform -expand:off -catalog:"lib/dtds/xhtml11/xhtmlcatalog.xml;lib/dtds/xhtml/dtd/xhtmlcatalog.xml"
 
 .DELETE_ON_ERROR: