diff --git a/build.py b/build.py
index 98b95539..a451c495 100755
--- a/build.py
+++ b/build.py
@@ -1404,10 +1404,13 @@ def cmd_build_py(options, args):
         build_options.append('--jobs=%s' % options.jobs)
     if options.relwithdebug:
         build_options.append('--msvc_relwithdebug')
-    if options.gtk2:
-        build_options.append('--gtk2')
-    if options.gtk3:
-        build_options.append('--gtk3')
+    if not isDarwin and not isWindows:
+        if options.gtk2:
+            build_options.append('--gtk2')
+            wafBuildDir = posixjoin(wafBuildBase, 'gtk2')
+        if options.gtk3:
+            build_options.append('--gtk3')
+            wafBuildDir = posixjoin(wafBuildBase, 'gtk3')
 
     build_options.append('--python="%s"' % PYTHON)
     build_options.append('--out=%s' % wafBuildDir) # this needs to be the last option
diff --git a/buildtools/config.py b/buildtools/config.py
index 079a561f..c4acfc85 100644
--- a/buildtools/config.py
+++ b/buildtools/config.py
@@ -50,7 +50,7 @@ class Configuration(object):
     # wx-config command will be assembled based on version, port,
     # etc. and it will be looked for on the default $PATH.
 
-    WXPORT = 'gtk2'
+    WXPORT = 'gtk3'
     # On Linux/Unix there are several ports of wxWidgets available.
     # Setting this value lets you select which will be used for the
     # wxPython build.  Possibilities are 'gtk', 'gtk2', 'gtk3' and 'x11'.
@@ -351,6 +351,8 @@ class Configuration(object):
     def parseCmdLine(self):
         self.debug = '--debug' in sys.argv or '-g' in sys.argv
 
+        if '--gtk2' in sys.argv:
+            self.WXPORT = 'gtk2'
         if '--gtk3' in sys.argv:
             self.WXPORT = 'gtk3'