diff --git a/src/Socialbox/Classes/CliCommands/InitializeCommand.php b/src/Socialbox/Classes/CliCommands/InitializeCommand.php
index 0e9e694..cb03c43 100644
--- a/src/Socialbox/Classes/CliCommands/InitializeCommand.php
+++ b/src/Socialbox/Classes/CliCommands/InitializeCommand.php
@@ -348,7 +348,7 @@
                     case 'SB_CRYPTO_KEYPAIR_EXPIRES':
                     case 'SB_CRYPTO_ENCRYPTION_KEYS_COUNT':
                     case 'SB_CACHE_PORT':
-                        if($variable !== false)
+                        if($variable !== false && is_numeric($variable))
                         {
                             Configuration::getConfigurationLib()->set($config, (int) $variable);
                             Program::getLogger()->info(sprintf('Set %s to %s', $config, $variable));
diff --git a/src/Socialbox/Objects/Standard/ServerInformation.php b/src/Socialbox/Objects/Standard/ServerInformation.php
index 101d33a..09814b7 100644
--- a/src/Socialbox/Objects/Standard/ServerInformation.php
+++ b/src/Socialbox/Objects/Standard/ServerInformation.php
@@ -19,7 +19,7 @@
         public function __construct(array $data)
         {
             $this->serverName = $data['server_name'];
-            $this->serverKeypairExpires = $data['server_keypair_expires'];
+            $this->serverKeypairExpires = (int)$data['server_keypair_expires'] ?? 0;
             $this->transportEncryptionAlgorithm = $data['transport_encryption_algorithm'];
         }