Reword changelog entry
diff --git a/ChangeLog b/ChangeLog
index e0c3a0a..33247f7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -35,8 +35,8 @@
produced by some optimizing compilers, showing up as failures in
e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
by Aurelien Jarno and submitted by Jeffrey Martin.
- * Re-enable certain ssl-opt.sh tests that depend on a more recent GnuTLS
- version, as one has become available and integrated with the CI system.
+ * Re-enable certain interoperability tests in ssl-opt.sh which had previously
+ been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
= mbed TLS 2.16.0 branch released 2018-12-21
