diff --git a/src/Socialbox/Classes/StandardMethods/Settings/SettingsDeleteInformationField.php b/src/Socialbox/Classes/StandardMethods/Settings/SettingsDeleteInformationField.php
index f5f15b8..ec9897f 100644
--- a/src/Socialbox/Classes/StandardMethods/Settings/SettingsDeleteInformationField.php
+++ b/src/Socialbox/Classes/StandardMethods/Settings/SettingsDeleteInformationField.php
@@ -27,7 +27,9 @@
             {
                 throw new MissingRpcArgumentException('field');
             }
-            $fieldName = InformationFieldName::tryFrom(strtoupper($rpcRequest->getParameter('field')));
+
+            $fieldName = InformationFieldName::tryFrom(strtoupper((string)$rpcRequest->getParameter('field')));
+
             if($fieldName === null)
             {
                 throw new InvalidRpcArgumentException('field');
diff --git a/src/Socialbox/Managers/PeerInformationManager.php b/src/Socialbox/Managers/PeerInformationManager.php
index 4db2c7c..1a98c70 100644
--- a/src/Socialbox/Managers/PeerInformationManager.php
+++ b/src/Socialbox/Managers/PeerInformationManager.php
@@ -323,6 +323,10 @@
             {
                 $peerUuid = $peerUuid->getUuid();
             }
+            elseif(!Validator::validateUuid($peerUuid))
+            {
+                throw new InvalidArgumentException('The given internal peer UUID is not a valid UUID V4');
+            }
 
             try
             {