How to keep tab for Makefile

[EMayej]

When evaluating a template file for Makefile, the tab before each command is gone.

The template:

help:
    @echo "help"

The result:

help:
@echo "help"

Tried to add below code to the head of the template but that doesn't work. template:

# expand-env: ((yas-indent-line 'fixed))
# --
help:
    @echo "help"

result:

# expand-env: ((yas-indent-line 'fixed))
# --
help:
@echo "help"

Is there any way we could keep the tab?