diff --git a/gns3server/modules/vmware/vmware_vm.py b/gns3server/modules/vmware/vmware_vm.py
index 1aba1a3e..9f922ae3 100644
--- a/gns3server/modules/vmware/vmware_vm.py
+++ b/gns3server/modules/vmware/vmware_vm.py
@@ -397,7 +397,8 @@ class VMwareVM(BaseVM):
         Starts this VMware VM.
         """
 
-        if os.path.exists(self._vmx_path + ".lck"):
+        # The lock dection is not working on OSX the .lck is never deleted
+        if os.path.exists(self._vmx_path + ".lck") and not sys.platform.startswith("darwin"):
             raise VMwareError("VM locked, it is either running or being edited in VMware")
 
         ubridge_path = self.ubridge_path