diff --git a/sys/winnt/Makefile.msc b/sys/winnt/Makefile.msc
index 4abb7a6c5..08acb206d 100644
--- a/sys/winnt/Makefile.msc
+++ b/sys/winnt/Makefile.msc
@@ -153,6 +153,7 @@ DLBFLG =
 # Visual Studio we are using.  We set VSVER to 0000 to flag any version that 
 # is too old or untested.
 #
+#NMAKE version 1414264330 is distributed with VS 15.7.5
 
 #!MESSAGE $(MAKEFLAGS)
 #!MESSAGE $(MAKEDIR)
@@ -174,9 +175,9 @@ VSVER=2012
 VSVER=2013
 !ELSEIF ($(MAKEVERSION) > 1400000000) && ($(MAKEVERSION) < 1411000000)
 VSVER=2015
-!ELSEIF ($(MAKEVERSION) > 1411000000) && ($(MAKEVERSION) < 1412258351)
+!ELSEIF ($(MAKEVERSION) > 1411000000) && ($(MAKEVERSION) < 1414264331)
 VSVER=$(VSNEWEST)
-!ELSEIF ($(MAKEVERSION) > 1412258350)
+!ELSEIF ($(MAKEVERSION) > 1414264330)
 VSVER=2999              #untested future version
 !ENDIF