diff --git a/bin/tests/system/conf.sh.in b/bin/tests/system/conf.sh.in
index c9a2fb2606..4da8d38bb5 100644
--- a/bin/tests/system/conf.sh.in
+++ b/bin/tests/system/conf.sh.in
@@ -50,6 +50,7 @@ PK11LIST="$TOP/bin/pkcs11/pkcs11-list -s ${SLOT:-0} -p 1234"
 PK11DEL="$TOP/bin/pkcs11/pkcs11-destroy -s ${SLOT:-0} -p 1234"
 JOURNALPRINT=$TOP/bin/tools/named-journalprint
 VERIFY=$TOP/bin/dnssec/dnssec-verify
+ARPANAME=$TOP/bin/tools/arpaname
 
 # The "stress" test is not run by default since it creates enough
 # load on the machine to make it unusable to other users.
@@ -79,4 +80,4 @@ fi
 
 export NAMED LWRESD DIG NSUPDATE KEYGEN KEYFRLAB SIGNER KEYSIGNER KEYSETTOOL \
        PERL SUBDIRS RNDC CHECKZONE PK11GEN PK11LIST PK11DEL TESTSOCK6 \
-       JOURNALPRINT
+       JOURNALPRINT ARPANAME