diff --git a/tests/test/readme.txt b/tests/test/readme.txt
index f6f118067c..56c32eaaaa 100644
--- a/tests/test/readme.txt
+++ b/tests/test/readme.txt
@@ -14,3 +14,6 @@ Exceptions ............ testexc.pp
 Libraries ............. testlib.pp     a very primitive test
 Parameter passing
 via out ............... testout.pp
+
+str/write(real_type) .. strreal.pp     test correct rounding
+                        strreal2.pp    test correct writing of 10 till 1e-24
\ No newline at end of file