diff --git a/etc/inc/upgrade_config.inc b/etc/inc/upgrade_config.inc
index 4fea0f0685..124ba41a0e 100644
--- a/etc/inc/upgrade_config.inc
+++ b/etc/inc/upgrade_config.inc
@@ -1322,6 +1322,7 @@ function upgrade_051_to_052() {
 					$crl['descr'] = "Imported OpenVPN CRL #{$index}";
 					$crl['caref'] = $ca['refid'];
 					$crl['text'] = $server['crl'];
+					$config['crl'] = array();
 					$config['crl'][] = $crl;
 					$server['crlref'] = $crl['refid'];
 				}