diff --git a/configure.ac b/configure.ac
index 2a7fb1f..ed280dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -80,5 +80,5 @@ fi
 
 AC_CONFIG_FILES([Makefile])
 AC_REQUIRE_AUX_FILE([tap-driver.sh])
-AX_VALGRIND_CHECK # http://www.gnu.org/software/autoconf-archive/ax_valgrind_check.html
+AX_VALGRIND_CHECK # http://www.gnu.org/software/autoconf-archive/ax_valgrind_check.html - make check-valgrind
 AC_OUTPUT