diff --git a/bin/tests/system/conf.sh b/bin/tests/system/conf.sh
index 79518b3870..4f2b11dff3 100755
--- a/bin/tests/system/conf.sh
+++ b/bin/tests/system/conf.sh
@@ -8,8 +8,9 @@ TOP="`cd ../../..; pwd`"
 NAMED=$TOP/bin/named/named
 KEYGEN=$TOP/bin/tests/keygen
 SIGNER=$TOP/bin/tests/signer
+KEYSIGNER=$TOP/bin/tests/keysigner
 KEYSETTOOL=$TOP/bin/tests/keysettool
 
 SUBDIRS="xfer dnssec xferquota"
 
-export NAMED KEYGEN SIGNER KEYSETTOOL
+export NAMED KEYGEN SIGNER KEYSIGNER KEYSETTOOL