diff --git a/tests/testthat/setup-options.R b/tests/testthat/setup-options.R
index 6c64473..78be1f9 100644
--- a/tests/testthat/setup-options.R
+++ b/tests/testthat/setup-options.R
@@ -1,3 +1,6 @@
+# `opts_partial_match_old` is left for exclusions due to partial matching in dependent packages (i.e. not fixable here)
+# it might happen that it is not used right now, but it is left for possible future use
+# use with: `withr::with_options(opts_partial_match_old, { ... })` inside the test
 opts_partial_match_old <- list(
   warnPartialMatchDollar = getOption("warnPartialMatchDollar"),
   warnPartialMatchArgs = getOption("warnPartialMatchArgs"),