diff --git a/ChangeLog b/ChangeLog
index de7b6b8..ff32e44 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -145,6 +145,8 @@ obsolete these days and in any case had become very haphazard.
 
 20. Add strerror() to pcre2test for failed file opening.
 
+21. Make pcre2test -C list valgrind support when it is enabled.
+
 
 Version 10.22 29-July-2016
 --------------------------
diff --git a/src/pcre2test.c b/src/pcre2test.c
index 307886b..6cf673c 100644
--- a/src/pcre2test.c
+++ b/src/pcre2test.c
@@ -7174,6 +7174,9 @@ printf("  16-bit support\n");
 #ifdef SUPPORT_PCRE2_32
 printf("  32-bit support\n");
 #endif
+#ifdef SUPPORT_VALGRIND
+printf("  Valgrind support\n");
+#endif
 
 (void)PCRE2_CONFIG(PCRE2_CONFIG_UNICODE, &optval);
 if (optval != 0)