diff --git a/winbuild/MakefileBuild.vc b/winbuild/MakefileBuild.vc
index 9569ed9e7..6ac9a7548 100644
--- a/winbuild/MakefileBuild.vc
+++ b/winbuild/MakefileBuild.vc
@@ -143,7 +143,7 @@ SSH2_CFLAGS = $(SSH2_CFLAGS) /I$(WITH_DEVEL)/include/libssh2
 !ENDIF
 
 
-!IFNDEF USE_SSL
+!IFDEF USE_WINSSL
 CFLAGS_SSPI  = /DUSE_SCHANNEL
 USE_SCHANNEL = true
 USE_SSPI     = yes