diff --git a/sys/winnt/Makefile.msc b/sys/winnt/Makefile.msc
index bcf9b679c..3544d8198 100644
--- a/sys/winnt/Makefile.msc
+++ b/sys/winnt/Makefile.msc
@@ -379,7 +379,7 @@ MAKEVERSION=$(MAKEVERSION: =)
 #!MESSAGE $(_NMAKE_VER)
 #!MESSAGE $(MAKEVERSION)
 
-VSNEWEST=2017
+VSNEWEST=2019
 !IF ($(MAKEVERSION) < 1000000000)
 VSVER=0000		#untested ancient version
 !ELSEIF ($(MAKEVERSION) > 1000000000) && ($(MAKEVERSION) < 1100000000)
@@ -390,9 +390,11 @@ VSVER=2012
 VSVER=2013
 !ELSEIF ($(MAKEVERSION) > 1400000000) && ($(MAKEVERSION) < 1411000000)
 VSVER=2015
-!ELSEIF ($(MAKEVERSION) > 1411000000) && ($(MAKEVERSION) < 1414264331)
+!ELSEIF ($(MAKEVERSION) > 1411000000) && ($(MAKEVERSION) < 1416270312)
+VSVER=2017
+!ELSEIF ($(MAKEVERSION) > 1416270311) && ($(MAKEVERSION) < 1420275082)
 VSVER=$(VSNEWEST)
-!ELSEIF ($(MAKEVERSION) > 1414264330)
+!ELSEIF ($(MAKEVERSION) > 1420275081)
 VSVER=2999              #untested future version
 !ENDIF