diff --git a/src/etc/inc/plugins.inc.d/ipsec.inc b/src/etc/inc/plugins.inc.d/ipsec.inc
index 488faf1ed..3ed062080 100644
--- a/src/etc/inc/plugins.inc.d/ipsec.inc
+++ b/src/etc/inc/plugins.inc.d/ipsec.inc
@@ -359,7 +359,7 @@ function ipsec_get_phase1_src(&$ph1ent)
     if ($ph1ent['protocol'] == "inet46") {
         $ipv4 = get_interface_ip($if);
         $ipv6 = get_interface_ipv6($if);
-        return $ipv4 ? $ipv4.($ipv6 ? ','.$ipv6 : '') : $ipv6;
+        return $ipv4 ? $ipv4 . ($ipv6 ? ',' . $ipv6 : '') : $ipv6;
     } elseif ($ph1ent['protocol'] == "inet6") {
         return get_interface_ipv6($if);
     } else {