fix warning message

[JamesLYC88]

What does this PR do?

Fixes #1156

Before submitting

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• Did you make sure to update the docs?
• Did you write any new necessary tests?

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[codecov]

Codecov Report

Merging #1157 (4a997d3) into master (7adb034) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #1157   +/-   ##
======================================
  Coverage      90%     90%           
======================================
  Files         185     185           
  Lines        8388    8388           
======================================
  Hits         7516    7516           
  Misses        872     872