diff --git a/server/plugins-available/apache2_plugin.inc.php b/server/plugins-available/apache2_plugin.inc.php
index 7aaac0002dec2303921978778b3416ef2a5ddb17..18219721b9d74d1dbf181598b01074c26045c8b7 100644
--- a/server/plugins-available/apache2_plugin.inc.php
+++ b/server/plugins-available/apache2_plugin.inc.php
@@ -1207,7 +1207,7 @@ class apache2_plugin {
 			if(is_array($aliasdomains)) {
 				foreach($aliasdomains as $aliasdomain) {
 					$temp_domains[] = $aliasdomain['domain'];
-					if(isset($aliasdomain['subdomain']) && (! empty($aliasdomain['subdomain']) && $aliasdomain['subdomain']) != "none" ) {
+					if(isset($aliasdomain['subdomain']) && (! empty($aliasdomain['subdomain']) && $aliasdomain['subdomain'] != "none" )) {
 						$temp_domains[] = $aliasdomain['subdomain'] . "." . $aliasdomain['domain'];
 					}
 				}
diff --git a/server/plugins-available/nginx_plugin.inc.php b/server/plugins-available/nginx_plugin.inc.php
index a3981520c91ca914c671c4a0c73a2a9861e9e4fa..4bd5da523429503d1039d482587ccf2778a33a21 100644
--- a/server/plugins-available/nginx_plugin.inc.php
+++ b/server/plugins-available/nginx_plugin.inc.php
@@ -1281,7 +1281,7 @@ class nginx_plugin {
 			if(is_array($aliasdomains)) {
 				foreach($aliasdomains as $aliasdomain) {
 					$temp_domains[] = $aliasdomain['domain'];
-					if(isset($aliasdomain['subdomain']) && (! empty($aliasdomain['subdomain']) && $aliasdomain['subdomain']) != "none" ) {
+					if(isset($aliasdomain['subdomain']) && (! empty($aliasdomain['subdomain']) && $aliasdomain['subdomain'] != "none" )) {
 						$temp_domains[] = $aliasdomain['subdomain'] . "." . $aliasdomain['domain'];
 					}