diff --git a/tryton/common/common.py b/tryton/common/common.py
index 9e1e62ef34..0a4ed4cd98 100644
--- a/tryton/common/common.py
+++ b/tryton/common/common.py
@@ -242,6 +242,16 @@ def file_open(filename, type, parent, print_p=False):
             # Try without operation, it is not supported on version < 2.5
             os.startfile(os.path.normpath(filename))
         return
+    elif os.name == 'mac':
+        pid = os.fork()
+        if not pid:
+            pid = os.fork()
+            if not pid:
+                os.execv('/usr/bin/open', ['/usr/bin/open', filename])
+            time.sleep(0.1)
+            sys.exit(0)
+        os.waitpid(pid, 0)
+        return
     cmd = ''
     if type in CONFIG['client.actions']:
         if print_p:
diff --git a/tryton/gui/main.py b/tryton/gui/main.py
index 4ae0a87758..7614b6c241 100644
--- a/tryton/gui/main.py
+++ b/tryton/gui/main.py
@@ -191,8 +191,9 @@ class Main(object):
             self.glade.get_widget(signals[signal][2]).set_active(
                     int(bool(CONFIG[signals[signal][1]])))
 
-        if os.name == 'nt':
+        if os.name in ('nt', 'mac'):
             # Disable actions, on win32 we use os.startfile
+            # and on mac we use /usr/bin/open
             self.glade.get_widget('actions').set_sensitive(False)
 
         # Adding a timer the check to requests