diff --git a/make-includes/build_document_rules.make b/make-includes/build_document_rules.make
index efc2275..c5e3ef3 100755
--- a/make-includes/build_document_rules.make
+++ b/make-includes/build_document_rules.make
@@ -125,10 +125,18 @@
 
 
 #
-# List of XSL stylesheets. If any of these change, we need to rebuild everything.
+# List of XSL stylesheets. If any of these change, we need to rebuild
+# everything. 
+#
+# We can't use the resolver approach under Windows because of the DOS
+# pathnames. The style sheets come out of the resolver with paths like
+# C:\bar\foo\..., and make interprets the colon as an extra dependency
+# delimiter (tested and behaviour verified). Of course, this works fine on
+# any platform with sensible path standards. Quoting the value doesn't
+# help, unfortunately. Bugger :(
 #
 #XSLT_STYLESHEETS:=$(shell java org.apache.xml.resolver.apps.resolver -u file:///xml2html.xsl uri | ( grep 'Result: file:' || echo '::xml2html.xsl' ) | cut -d':' -f3-) $(shell java org.apache.xml.resolver.apps.resolver -u file:///xml2latex.xsl uri | ( grep 'Result: file:' || echo '::xml2latex.xsl' ) | cut -d':' -f3-)
-XSLT_STYLESHEETS=$(TEACHING_SHARED)/Authoring/XML/xml2html.xsl $(TEACHING_SHARED)/Authoring/XML/xml2latex.xsl
+XSLT_STYLESHEETS:=$(TEACHING_SHARED)/Authoring/XML/xml2html.xsl $(TEACHING_SHARED)/Authoring/XML/xml2latex.xsl
 
 
 ################################################################################
@@ -458,6 +466,7 @@
 	@echo "PRINT_ANSWERS_PDF_2UP = [$(PRINT_ANSWERS_PDF_2UP)]"
 	@echo "DERIVED_WEB_FILES = [$(DERIVED_WEB_FILES)]"
 	@echo "DERIVED_PRINT_FILES = [$(DERIVED_PRINT_FILES)]"
+	@echo "XSLT_STYLESHEETS = [$(XSLT_STYLESHEETS)]"
 	@echo "CONTENT_SRC = [$(CONTENT_SRC)]"
 	@echo "INSTALL_DIRECTORY = [$(INSTALL_DIRECTORY)]"
 	@echo "QUESTION_INSTALL_FILES = [$(QUESTION_INSTALL_FILES)]"