diff -r ec153828ded2 -r b789b695b5c6 graphics/FBD_Objects.py
--- a/graphics/FBD_Objects.py	Tue Aug 15 12:17:51 2017 +0300
+++ b/graphics/FBD_Objects.py	Tue Aug 15 15:50:30 2017 +0300
@@ -262,8 +262,8 @@
                 outputs = connectors.get("outputs", [])
                 self.Description = None
             if self.ExecutionControl:
-                inputs.insert(0, ("EN","BOOL","none"))
-                outputs.insert(0, ("ENO","BOOL","none"))
+                inputs.insert(0,  ("EN",   "BOOL", "none"))
+                outputs.insert(0, ("ENO" , "BOOL", "none"))
             self.Pen = MiterPen(self.Colour)
 
             # Extract the inputs properties and create or modify the corresponding connector