diff --git a/Makefile b/Makefile
index 7ad70206..49ef73bb 100644
--- a/Makefile
+++ b/Makefile
@@ -502,7 +502,7 @@ ntinstall:
 	$(MAKE) ntinstall
 	cd ..\..
 	-mkdir $(NTINSTDIR)\data
-	cd data
+	cd $(NTINSTDIR)\data
 	($(NTINSTDIR)\bin\pconfig.exe > $(NTINSTDIR)\data\econfig.new)
 	-(move econfig.new econfig)
 	cd ..