diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index aec9efa..4d03a72 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1321,6 +1321,10 @@
 
 CFLAGS_INST = /nologo /O2 -DNDEBUG -DWIN32 -DWINVER=$(WINVER) -D_WIN32_WINNT=$(WINVER) $(CFLAGS_DEPR)
 
+!IFDEF PATCHLEVEL
+CFLAGS_INST=	$(CFLAGS_INST) -DVIM_VERSION_PATCHLEVEL=$(PATCHLEVEL)
+!ENDIF
+
 install.exe: dosinst.c dosinst.h version.h
 	$(CC) $(CFLAGS_INST) dosinst.c kernel32.lib shell32.lib \
 		user32.lib ole32.lib advapi32.lib uuid.lib \