diff --git a/bin/tests/system/chain/prereq.sh b/bin/tests/system/chain/prereq.sh
index ec05effa66..18b3ee94bf 100644
--- a/bin/tests/system/chain/prereq.sh
+++ b/bin/tests/system/chain/prereq.sh
@@ -17,6 +17,8 @@
 SYSTEMTESTTOP=..
 . $SYSTEMTESTTOP/conf.sh
 
+$SHELL ../testcrypto.sh || exit 255
+
 if test -n "$PYTHON"
 then
     if $PYTHON -c "import dns" 2> /dev/null