diff --git a/tests/README.md b/tests/README.md
index 21fa3a1..ca5c18d 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -12,7 +12,7 @@ Included are four utilities that are used in some tests, (they require *pandas*,
 
 Each test resides in its own folder. Folders have names with format /^\d{4}_.*$/, the numeral being assigned sequentially, followed by a tag. A folder *sources* contains original files (SBML, COPASI and GraphViz files), as they can be re-used in several tests.
  - a brief *README.md* describing the functionality that is being tested
- - a *run.sh* script that runs the test and that carries out any needed comparisons so that it announces **PASS** or **FAIL**; note that this may execute a series of calls to *sbmodelr*, the utilities mentioned above, unix utilities (*awk*, *bc*, *grep*, *sed*), and it may also run the resulting file with COPASI
+ - a *run.sh* script that runs the test and that carries out any needed comparisons so that it announces **PASS** or **FAIL**; note that this may execute a series of calls to *sbmodelr*, the utilities mentioned above, unix utilities (*awk*, *bc*, *grep*, *sed*, *wc*), and it may also run the resulting file with COPASI
  - a file *target_stdout* containing the expected *stdout* output from a correct execution (ideally this should be a read-only file)
  - potentially files with results from COPASI runs to be compared against runs of the result files (no specific names prescribed)