diff --git a/tests/runtests.pl b/tests/runtests.pl
index c29aeaf52528be1e88254e5bd2c48222556586c0..44b22d75cfcb418cc982cd01917901a7ab1fd66d 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -3368,6 +3368,7 @@ sub singletest {
             $valgrindcmd .= "$valgrind_tool " if($valgrind_tool);
             $valgrindcmd .= "--leak-check=yes ";
             $valgrindcmd .= "--suppressions=$srcdir/valgrind.supp ";
+           # $valgrindcmd .= "--gen-suppressions=all ";
             $valgrindcmd .= "--num-callers=16 ";
             $valgrindcmd .= "${valgrind_logfile}=$LOGDIR/valgrind$testnum";
             $CMDLINE = "$valgrindcmd $CMDLINE";