diff --git a/Makefile b/Makefile
index d0971d942..5932488ee 100644
--- a/Makefile
+++ b/Makefile
@@ -86,10 +86,15 @@ CLEAN=$(CONTENT) $(NEWSFILES) $(WWW_CCC_DE_UPDATES) $(CALENDAR_SUMMARY) $(DS_PAG
 NOINPUTVALID:=false
 NOVALID:=false
 
+ALL_XSLS = $(wildcard xsl/*.xsl)
+
 define xml_process
-	$(NOINPUTVALID) || $(VALIDATOR) $(VFLAGS_IN) $<
+	@$(NOINPUTVALID) || echo $(VALIDATOR) $(VFLAGS_IN) $<
+	@$(NOINPUTVALID) || $(VALIDATOR) $(VFLAGS_IN) $< 2>&1 | grep -v " validates" || true
 	$(PROCESSOR) $(PFLAGS) -o $@ $(STYLE) $<
-	$(NOVALID) || $(VALIDATOR) $(VFLAGS_OUT) $@ || \
+	@$(NOVALID) || echo $(VALIDATOR) $(VFLAGS_OUT) $@ || \
+		{ touch -m -t 197001010000 Makefile $@ ; exit 1 ; }
+	@$(NOVALID) || $(VALIDATOR) $(VFLAGS_OUT) $@ || \
 		{ touch -m -t 197001010000 Makefile $@ ; exit 1 ; }
 endef
 
@@ -186,7 +191,7 @@ $(CALENDAR_SUMMARY): content/events.xml news.xml
 	$(call xml_process)
 
 build/calendar.html : VFLAGS_IN=$(VFLAGS)
-build/calendar.html: $(CALENDAR_SUMMARY) $(STYLE) $(NAVIGATION) $(WWW_CCC_DE_UPDATES) $(DATESTAMP)
+build/calendar.html: $(CALENDAR_SUMMARY) $(STYLE) $(NAVIGATION) $(WWW_CCC_DE_UPDATES) $(DATESTAMP) $(ALL_XSLS)
 	$(call xml_process)
 
 # XCal