diff --git a/controllers/LoginController.php b/controllers/LoginController.php
index 0d850901..e1691ad4 100644
--- a/controllers/LoginController.php
+++ b/controllers/LoginController.php
@@ -30,7 +30,7 @@ class LoginController extends BaseController
 			if ($user !== null && password_verify($inputPassword, $user->password))
 			{
 				$sessionKey = $this->SessionService->CreateSession($user->id, $stayLoggedInPermanently);
-				setcookie($this->SessionCookieName, $sessionKey, time() + 31220640000); // Cookie expires in 999 years, but session validity is up to SessionService
+				setcookie($this->SessionCookieName, $sessionKey, intval(time() + 31220640000)); // Cookie expires in 999 years, but session validity is up to SessionService
 
 				if (password_needs_rehash($user->password, PASSWORD_DEFAULT))
 				{
diff --git a/services/SessionService.php b/services/SessionService.php
index 685400cc..f08f11c2 100644
--- a/services/SessionService.php
+++ b/services/SessionService.php
@@ -37,10 +37,10 @@ class SessionService extends BaseService
 	{
 		$newSessionKey = $this->GenerateSessionKey();
 		
-		$expires = date('Y-m-d H:i:s', time() + 2592000); // Default is that sessions expire in 30 days
+		$expires = date('Y-m-d H:i:s', intval(time() + 2592000)); // Default is that sessions expire in 30 days
 		if ($stayLoggedInPermanently === true)
 		{
-			$expires = date('Y-m-d H:i:s', time() + 31220640000); // 999 years aka forever
+			$expires = date('Y-m-d H:i:s', intval(time() + 31220640000)); // 999 years aka forever
 		}
 
 		$sessionRow = $this->Database->sessions()->createRow(array(