diff --git a/lib/Makefile.vc6 b/lib/Makefile.vc6
index 643475f490785831bd040109090066474fbc5ec1..dc396bb88dc5b60271c4548d66eaaeec34fda077 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 fbcfbf9e80e52f900469d01f67a594a7a581aa2e..2332422525a6fe8877d19eb86f9152472203f9db 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