diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index 4d8b669..769aebf 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1096,7 +1096,7 @@
 $(OUTDIR)/if_perlsfio.obj: $(OUTDIR) if_perlsfio.c  $(INCL)
 	$(CC) $(CFLAGS) $(PERL_INC) if_perlsfio.c
 
-$(OUTDIR)/if_mzsch.obj: $(OUTDIR) if_mzsch.c  $(INCL) $(MZSCHEME_EXTRA_DEP)
+$(OUTDIR)/if_mzsch.obj: $(OUTDIR) if_mzsch.c if_mzsch.h $(INCL) $(MZSCHEME_EXTRA_DEP)
 	$(CC) $(CFLAGS) if_mzsch.c \
 		-DMZSCHEME_COLLECTS=\"$(MZSCHEME:\=\\)\\collects\"
 mzscheme_base.c: