diff --git a/lib-src/makefile.nt b/lib-src/makefile.nt
index d2f56afde94..ab1729cfa8c 100644
--- a/lib-src/makefile.nt
+++ b/lib-src/makefile.nt
@@ -25,7 +25,8 @@
 #
 !include ..\nt\makefile.def
 
-LOCAL_FLAGS	= -DWINDOWSNT -DDOS_NT -DSTDC_HEADERS=1 -DNO_LDAV=1 -DNO_ARCHIVES=1 -I..\nt\inc -I..\src
+LOCAL_FLAGS	= -DWINDOWSNT -DDOS_NT -DSTDC_HEADERS=1 -DNO_LDAV=1 \
+	-DNO_ARCHIVES=1 -DHAVE_CONFIG_H=1 -I..\nt\inc -I..\src
 
 LINK_FLAGS	= $(ARCH_LDFLAGS) -debug:PARTIAL -machine:$(ARCH) -subsystem:console -entry:mainCRTStartup setargv.obj