diff --git a/pospro b/pospro
index 0d9a8f4..74d0bc5 100755
--- a/pospro
+++ b/pospro
@@ -33,8 +33,10 @@ class SingleInstanceApp(QApplication):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-        for process in psutil.process_iter(['pid', 'name']):
-            if process.info['name'] == PROCESS_NAME:
+        for process in psutil.process_iter(['pid', 'name', 'cmdline']):
+            name = process.info['name']
+            cmdline = process.info['cmdline']
+            if name == PROCESS_NAME or (isinstance(cmdline, list) and 'pospro' in cmdline):
                 logger.error('La aplicación ya esta en ejecución')
                 self.show_already_running_dialog()
                 sys.exit(1)