fix macro

[t-bltg]

Fix #4591.

[codecov]

Codecov Report

Base: 90.76% // Head: 90.76% // No change to project coverage 👍

Coverage data is based on head (188803a) compared to base (fb83ea2).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4592   +/-   ##
=======================================
  Coverage   90.76%   90.76%           
=======================================
  Files          41       41           
  Lines        8767     8767           
=======================================
  Hits         7957     7957           
  Misses        810      810           

Impacted Files	Coverage Δ
src/backends.jl	82.32% <100.00%> (ø)

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