diff --git a/includes/misc.inc.php b/includes/misc.inc.php
index 58d2703..9002ccc 100644
--- a/includes/misc.inc.php
+++ b/includes/misc.inc.php
@@ -61,6 +61,12 @@ if (class_exists('SQLite3') === FALSE) {
     $errormsg = "You need PHP SQLite3 to run nsedit";
     $blocklogin = TRUE;
 }
+ 
+if (function_exists('openssl_random_pseudo_bytes') === FALSE) {
+    $errormsg = "You need PHP compiled with openssl to run nsedit";
+    $blocklogin = TRUE;
+}
+
 
 $defaults['defaulttype'] = ucfirst(strtolower($defaults['defaulttype']));