diff --git a/lib/Makefile.vc6 b/lib/Makefile.vc6
index 643475f490..dc396bb88d 100644
--- a/lib/Makefile.vc6
+++ b/lib/Makefile.vc6
@@ -58,7 +58,7 @@ MACHINE  = X86
 # It can be downloaded from:
 # http://www.microsoft.com/msdownload/platformsdk/sdkupdate/
 
-# USE_WINDOWS_SSPI = 1
+# WINDOWS_SSPI = 1
 
 !IFDEF WINDOWS_SSPI
 !IFNDEF WINDOWS_SDK_PATH
diff --git a/src/Makefile.vc6 b/src/Makefile.vc6
index fbcfbf9e80..2332422525 100644
--- a/src/Makefile.vc6
+++ b/src/Makefile.vc6
@@ -41,7 +41,7 @@ MACHINE  = X86
 # It can be downloaded from:
 # http://www.microsoft.com/msdownload/platformsdk/sdkupdate/
 
-# USE_WINDOWS_SSPI = 1
+# WINDOWS_SSPI = 1
 
 !IFDEF WINDOWS_SSPI
 !IFNDEF WINDOWS_SDK_PATH