diff --git a/bin/tests/system/filter-aaaa/prereq.sh b/bin/tests/system/filter-aaaa/prereq.sh
index 3b1987957f..31f9ac6a46 100644
--- a/bin/tests/system/filter-aaaa/prereq.sh
+++ b/bin/tests/system/filter-aaaa/prereq.sh
@@ -6,10 +6,11 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-if $FEATURETEST --enable-filter-aaaa
-then
-    :
-else
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+
+$FEATURETEST --enable-filter-aaaa || {
     echo "I:This test requires --enable-filter-aaaa at compile time." >&2
     exit 255
-fi
+}
+exit 0