diff --git a/lib/Froxlor/Api/Commands/IpsAndPorts.php b/lib/Froxlor/Api/Commands/IpsAndPorts.php
index ffb6600b..0c2138e6 100644
--- a/lib/Froxlor/Api/Commands/IpsAndPorts.php
+++ b/lib/Froxlor/Api/Commands/IpsAndPorts.php
@@ -176,8 +176,9 @@ class IpsAndPorts extends ApiCommand implements ResourceEntity
 
 			if ((int)Settings::Get('system.use_ssl') == 1) {
 				$ssl = (bool)$this->getBoolParam('ssl', true, 0);
-				$ssl_cert_file = Validate::validate($this->getParam('ssl_cert_file', !$ssl, ''), 'ssl_cert_file', '', '', [], true);
-				$ssl_key_file = Validate::validate($this->getParam('ssl_key_file', !$ssl, ''), 'ssl_key_file', '', '', [], true);
+				$cert_optional = !($ssl && empty(Settings::Get('system.ssl_cert_file')));
+				$ssl_cert_file = Validate::validate($this->getParam('ssl_cert_file', $cert_optional, ''), 'ssl_cert_file', '', '', [], true);
+				$ssl_key_file = Validate::validate($this->getParam('ssl_key_file', $cert_optional, ''), 'ssl_key_file', '', '', [], true);
 				$ssl_ca_file = Validate::validate($this->getParam('ssl_ca_file', true, ''), 'ssl_ca_file', '', '', [], true);
 				$ssl_cert_chainfile = Validate::validate($this->getParam('ssl_cert_chainfile', true, ''), 'ssl_cert_chainfile', '', '', [], true);
 				$sslss = $this->getParam('ssl_specialsettings', true, '');
@@ -415,8 +416,9 @@ class IpsAndPorts extends ApiCommand implements ResourceEntity
 
 			if ((int)Settings::Get('system.use_ssl') == 1) {
 				$ssl = (bool)$this->getBoolParam('ssl', true, $result['ssl']);
-				$ssl_cert_file = Validate::validate($this->getParam('ssl_cert_file', !$ssl, $result['ssl_cert_file']), 'ssl_cert_file', '', '', [], true);
-				$ssl_key_file = Validate::validate($this->getParam('ssl_key_file', !$ssl, $result['ssl_key_file']), 'ssl_key_file', '', '', [], true);
+				$cert_optional = !($ssl && empty(Settings::Get('system.ssl_cert_file')));
+				$ssl_cert_file = Validate::validate($this->getParam('ssl_cert_file', $cert_optional, $result['ssl_cert_file']), 'ssl_cert_file', '', '', [], true);
+				$ssl_key_file = Validate::validate($this->getParam('ssl_key_file', $cert_optional, $result['ssl_key_file']), 'ssl_key_file', '', '', [], true);
 				$ssl_ca_file = Validate::validate($this->getParam('ssl_ca_file', true, $result['ssl_ca_file']), 'ssl_ca_file', '', '', [], true);
 				$ssl_cert_chainfile = Validate::validate($this->getParam('ssl_cert_chainfile', true, $result['ssl_cert_chainfile']), 'ssl_cert_chainfile', '', '', [], true);
 				$sslss = $this->getParam('ssl_specialsettings', true, $result['ssl_specialsettings']);
diff --git a/lib/formfields/formfield.domain_ssleditor.php b/lib/formfields/formfield.domain_ssleditor.php
index ee71cdad..cf0f784f 100644
--- a/lib/formfields/formfield.domain_ssleditor.php
+++ b/lib/formfields/formfield.domain_ssleditor.php
@@ -44,7 +44,8 @@ return [
 						'cols' => 100,
 						'rows' => 15,
 						'value' => $result['ssl_cert_file'],
-						'placeholder' => lng('domain.ssl_certificate_placeholder')
+						'placeholder' => lng('domain.ssl_certificate_placeholder'),
+						'mandatory' => true
 					],
 					'ssl_key_file' => [
 						'label' => lng('admin.ipsandports.ssl_key_file_content'),
@@ -53,7 +54,8 @@ return [
 						'cols' => 100,
 						'rows' => 15,
 						'value' => $result['ssl_key_file'],
-						'placeholder' => lng('domain.ssl_key_placeholder')
+						'placeholder' => lng('domain.ssl_key_placeholder'),
+						'mandatory' => true
 					],
 					'ssl_cert_chainfile' => [
 						'label' => lng('admin.ipsandports.ssl_cert_chainfile_content'),