diff --git a/gtk2_ardour/wscript b/gtk2_ardour/wscript
index 3a6680fe46..1c1f06ce20 100644
--- a/gtk2_ardour/wscript
+++ b/gtk2_ardour/wscript
@@ -372,7 +372,7 @@ def build(bld):
     if sys.platform == 'darwin':
         obj.use += ' libappleutility'
     obj.defines     = [
-        'PACKAGE="gtk2_ardour"',
+        'PACKAGE="gtk2_ardour3"',
         'VERSIONSTRING="' + bld.env['VERSION'] + '"',
         'DATA_DIR="' + os.path.normpath(bld.env['DATADIR']) + '"',
         'CONFIG_DIR="' + os.path.normpath(bld.env['SYSCONFDIR']) + '"',
diff --git a/libs/gtkmm2ext/wscript b/libs/gtkmm2ext/wscript
index e62205a2d5..4412a9273f 100644
--- a/libs/gtkmm2ext/wscript
+++ b/libs/gtkmm2ext/wscript
@@ -88,7 +88,7 @@ def build(bld):
     obj.vnum         = GTKMM2EXT_LIB_VERSION
     obj.install_path = os.path.join(bld.env['LIBDIR'], 'ardour3')
     obj.cxxflags     = [
-                    '-DPACKAGE="libgtkmm2ext"',
+                    '-DPACKAGE="libgtkmm2ext3"',
                     '-DLOCALEDIR="' + os.path.join(
                             os.path.normpath(bld.env['DATADIR']), 'locale') + '"']
     if bld.is_defined('GTKOSX'):