context selector doesn't work on last line

I am using this key binding:

{ "keys": ["enter"], "command": "comments_aware_enter", "context": [
{ "key": "selector", "operator": "equal", "operand": "comment.line" },
{ "key": "auto_complete_visible", "operator": "equal", "operand": false }
] },

but unfortunately 

{ "key": "selector", "operator": "equal", "operand": "comment.line" },

doesn't work when the cursor is on the last line in a file.