diff --git a/back/lib/ssl_peer_add b/back/lib/ssl_peer_add
index 8a7511c..b1b3b01 100755
--- a/back/lib/ssl_peer_add
+++ b/back/lib/ssl_peer_add
@@ -54,7 +54,7 @@ if ! sudo /usr/bin/openssl req -new -sha384 -reqexts SAN -extensions SAN \
 fi
 
 # Generate cert
-if ! sudo /usr/bin/openssl x509 -req -sha384 -extensions SAN -CAcreateserial \
+if ! sudo /usr/bin/openssl x509 -req -sha384 -extensions SAN -CAserial \
 	-extfile "${SSL_CONFIG_DIR}/${username}/${hostname}.cnf" \
 	-in "${SSL_CONFIG_DIR}/${username}/${hostname}.csr" \
 	-CA "${SSL_CA_CERT}" -CAkey "${SSL_CA_KEY}" \