diff --git a/tgt-null/Makefile.in b/tgt-null/Makefile.in
index 22a34ee41..7d722df5b 100644
--- a/tgt-null/Makefile.in
+++ b/tgt-null/Makefile.in
@@ -51,7 +51,7 @@ dep:
 
 O = null.o
 
-ifeq (@CYGWIN@,yes)
+ifeq (@WIN32@,yes)
   TGTLDFLAGS=-L.. -livl
   TGTDEPLIBS=../libivl.a
 else