diff --git a/bin/tests/system/chain/prereq.sh b/bin/tests/system/chain/prereq.sh
index 544e4ea0dc..b4bae48762 100644
--- a/bin/tests/system/chain/prereq.sh
+++ b/bin/tests/system/chain/prereq.sh
@@ -9,6 +9,8 @@
 SYSTEMTESTTOP=..
 . $SYSTEMTESTTOP/conf.sh
 
+$SHELL ../testcrypto.sh || exit 255
+
 if test -n "$PYTHON"
 then
     if $PYTHON -c "import dns" 2> /dev/null