diff --git a/createca.sh b/createca.sh
index 275038c..325a9c7 100755
--- a/createca.sh
+++ b/createca.sh
@@ -29,7 +29,7 @@ if [ -d "$1" ]; then
 fi
 CADIR="$1"
 
-mkdir -p "${CADIR}/{certs,crl,newcerts,private}"
+mkdir -p "${CADIR}"/{certs,crl,newcerts,private}
 
 cp "$2" "${CADIR}/private/ca.key.pem"
 cp "$3" "${CADIR}/ca.crt.pem"