diff --git a/buildtools/config.py b/buildtools/config.py
index 9836ff5b..299d4cf7 100644
--- a/buildtools/config.py
+++ b/buildtools/config.py
@@ -205,10 +205,7 @@ class Configuration(object):
         elif os.name == 'posix' or self.COMPILER == 'mingw32':
             self.Verify_WX_CONFIG()
             self.includes += ['include']
-            self.defines = [
-                             #('NDEBUG',),  # using a 1-tuple makes it do an undef
-                             ('SIP_MODULE_NAME', 'wx.siplib'),
-                             ('SIP_MODULE_BASENAME', 'siplib'),
+            self.defines = [ #('NDEBUG',),  # using a 1-tuple makes it do an undef
                              ]
             self.libdirs = []
             self.libs = []
diff --git a/wscript b/wscript
index a67cfd73..1e6ce538 100644
--- a/wscript
+++ b/wscript
@@ -292,6 +292,13 @@ def configure(conf):
         conf.env.CFLAGS_WXPY.append('-UNDEBUG')
         conf.env.CXXFLAGS_WXPY.append('-UNDEBUG')
 
+        # set the name of our siplib module
+        conf.env.CFLAGS_WXPY.append('-DSIP_MODULE_NAME=wx.siplib')
+        conf.env.CXXFLAGS_WXPY.append('-DSIP_MODULE_NAME=wx.siplib')
+
+        conf.env.CFLAGS_WXPY.append('-DSIP_MODULE_BASENAME=siplib')
+        conf.env.CXXFLAGS_WXPY.append('-DSIP_MODULE_BASENAME=siplib')
+
         # Add basic debug info for all builds
         conf.env.CFLAGS_WXPY.append('-g')
         conf.env.CXXFLAGS_WXPY.append('-g')