--- a/tests/query-harness.sh
+++ b/tests/query-harness.sh
@@ -10,7 +10,7 @@ fi
 testquery="${top_builddir}/tests/testquery"
 if [ -n "$USE_VALGRIND" ] && (type valgrind 1>/dev/null)
 then
-	output="`valgrind -q --error-exitcode=1 "$testquery" $arguments`"
+	output="`libtool --mode=execute valgrind -q --error-exitcode=1 "$testquery" $arguments`"
 else
 	output="`"$testquery" $arguments`"
 fi