diff --git a/make-ca b/make-ca
index d312445..34ac134 100644
--- a/make-ca
+++ b/make-ca
@@ -10,7 +10,7 @@
 #          Graham Weldon
 
 VERSION="1.0"
-${MAKE_CA_CONF:="/etc/make-ca.conf"}
+MAKE_CA_CONF="/etc/make-ca.conf"
 
 # Get/set defaults
 if test -f "${MAKE_CA_CONF}"; then