diff --git a/gtk2_ardour/wscript b/gtk2_ardour/wscript
index 296c0aaa64..e18373b368 100644
--- a/gtk2_ardour/wscript
+++ b/gtk2_ardour/wscript
@@ -596,7 +596,7 @@ def build(bld):
         obj = bld(
             target = b + '.bindings',
             source = b + '.bindings.in',
-            rule = '../tools/fmt-bindings --winkey="%s" --accelmap <${SRC} >${TGT}' % bld.env['WINDOWS_KEY']
+            rule = '../tools/fmt-bindings --platform="%s" --winkey="%s" --accelmap <${SRC} >${TGT}' % (sys.platform, bld.env['WINDOWS_KEY'] )
             )
         obj.install_path = os.path.join(bld.env['SYSCONFDIR'], 'ardour3')
 
diff --git a/tools/fmt-bindings b/tools/fmt-bindings
index 39849b1847..363dad02dd 100755
--- a/tools/fmt-bindings
+++ b/tools/fmt-bindings
@@ -29,7 +29,7 @@ GetOptions ("platform=s" => \$platform,
 	    "accelmap" => \$make_accelmap,
 	    "merge=s" => \$merge_from);
 
-if ($platform eq "osx") {
+if ($platform eq "darwin") {
 
     $gtk_modifier_map{'PRIMARY'} = 'meta';
     $gtk_modifier_map{'SECONDARY'} = 'Mod1';