diff --git a/winbuild/Makefile.vc b/winbuild/Makefile.vc
index 5967db1fe..8fafecf98 100644
--- a/winbuild/Makefile.vc
+++ b/winbuild/Makefile.vc
@@ -26,7 +26,7 @@ CFGSET=true
 !MESSAGE   USE_SSSPI=<yes or no>        - Enable SSPI support, default to yes
 !MESSAGE   ENABLE_IPV6=<yes or no>         - Enable IPV6, default to yes
 !MESSAGE   DEBUG=<yes or no>            - Debug builds
-!MESSAGE   ENABLE_IDN=<yes or no>          - Wheter or not to use IDN Windows APIs. Requires Windows Vista or later.
+!MESSAGE   ENABLE_IDN=<yes or no>       - Wheter or not to use IDN Windows APIs. Requires Windows Vista or later.
 !MESSAGE                                  or to install http://www.microsoft.com/downloads/details.aspx?FamilyID=AD6158D7-DDBA-416A-9109-07607425A815
 !MESSAGE   GEN_PDB=<yes or no>          - Generate Program Database (debug symbols release build)
 !ERROR please choose a valid mode
@@ -50,9 +50,9 @@ USE_SSPI=true
 !ENDIF
 
 !IFNDEF ENABLE_IPV6
-USE_IPV6   =true
+USE_IPV6   = true
 !ELSEIF "$(ENABLE_IPV6)"=="yes"
-USE_IPV6   =true
+USE_IPV6   = true
 !ENDIF
 
 !IFNDEF ENABLE_IDN
diff --git a/winbuild/MakefileBuild.vc b/winbuild/MakefileBuild.vc
index 6961f5c1e..238b3ea60 100644
--- a/winbuild/MakefileBuild.vc
+++ b/winbuild/MakefileBuild.vc
@@ -149,10 +149,10 @@ USE_SSPI=true
 !ENDIF
 
 !IFNDEF USE_IPV6
-USE_IPV6=yes
+USE_IPV6=true
 !ENDIF
 
-!IFNDEF USE_IDN
+!IFNDEF ENABLE_IDN
 USE_IDN   =true
 !ELSEIF "$(USE_IDN)"=="yes"
 USE_IDN   =true