diff --git a/msvc/detectenv-msvc.mak b/msvc/detectenv-msvc.mak
index 2e93552..d29d581 100644
--- a/msvc/detectenv-msvc.mak
+++ b/msvc/detectenv-msvc.mak
@@ -89,8 +89,10 @@ VSVER = 11
 VSVER = 12
 !elseif $(VCVERSION) > 1899 && $(VCVERSION) < 1910
 VSVER = 14
-!elseif $(VCVERSION) > 1909 && $(VCVERSION) < 2000
+!elseif $(VCVERSION) > 1909 && $(VCVERSION) < 1920
 VSVER = 15
+!elseif $(VCVERSION) > 1919 && $(VCVERSION) < 2000
+VSVER = 16
 !else
 VSVER = 0
 !endif
@@ -98,7 +100,7 @@ VSVER = 0
 !if "$(VSVER)" == "0"
 MSG = ^
 This NMake Makefile set supports Visual Studio^
-9 (2008) through 14 (2015).  Your Visual Studio^
+9 (2008) through 16 (2019).  Your Visual Studio^
 version is not supported.
 !error $(MSG)
 !elseif $(VSVER) < 15