Fix drop = FALSE to drop = TRUE

[mayer79]

Fix mistake in last PR

[codecov-commenter]

Codecov Report

Merging #118 (76d2f1c) into main (26da111) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 76d2f1c differs from pull request most recent head 480a37e. Consider uploading reports for the commit 480a37e to get more accurate results

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@@           Coverage Diff           @@
##             main     #118   +/-   ##
=======================================
  Coverage   97.36%   97.36%           
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  Files          11       11           
  Lines         798      798           
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  Hits          777      777           
  Misses         21       21           

Files	Coverage Δ
R/methods.R	97.75% <100.00%> (ø)