diff --git a/install/install.php b/install/install.php
index 01c59bd74379cd0806999e5be003d40ee4e05aeb..96c1425ac80b7a41dc37d316e6c05276fe7efa7f 100644
--- a/install/install.php
+++ b/install/install.php
@@ -102,6 +102,11 @@ $dist = get_distname();
 
 if($dist['id'] == '') die('Linux distribution or version not recognized.');
 
+//** Check the PHP Version
+if (version_compare(PHP_VERSION, '7.0.0') >= 0) {
+	die('PHP 7 is not supported by ISPConfig 3.0.5. Plesae use ISPConfig version 3.1 instead.');
+}
+
 //** Include the autoinstaller configuration (for non-interactive setups)
 error_reporting(E_ALL ^ E_NOTICE);
 
diff --git a/install/update.php b/install/update.php
index 3eeedd0e74f8ec0e56d0204065dfd9af1b9cfc3e..a620c32d11f7a7bbe63b33eee937df9ffb380a96 100644
--- a/install/update.php
+++ b/install/update.php
@@ -107,6 +107,11 @@ unset($conf);
 
 if($dist['id'] == '') die('Linux distribution or version not recognized.');
 
+//** Check the PHP Version
+if (version_compare(PHP_VERSION, '7.0.0') >= 0) {
+	die('PHP 7 is not supported by ISPConfig 3.0.5. Plesae use ISPConfig version 3.1 instead.');
+}
+
 //** Include the autoinstaller configuration (for non-interactive setups)
 error_reporting(E_ALL ^ E_NOTICE);