diff --git a/sulfur/src/sulfur/__init__.py b/sulfur/src/sulfur/__init__.py
index 0a3eb43f5..a06a4d7d1 100644
--- a/sulfur/src/sulfur/__init__.py
+++ b/sulfur/src/sulfur/__init__.py
@@ -65,7 +65,7 @@ class SulfurApplication(Controller, SulfurApplicationEventsMixin):
         self.Cacher = EntropyCacher()
 
         self.do_debug = False
-        locked = self.Equo.resources_check_lock()
+        locked = self.Equo.application_lock_check()
         if locked:
             okDialog( None,
                 _("Entropy resources are locked and not accessible. Another Entropy application is running. Sorry, can't load Sulfur.") )