diff --git a/phpseclib/Crypt/Random.php b/phpseclib/Crypt/Random.php
index 0bee3c45..586bd6c4 100644
--- a/phpseclib/Crypt/Random.php
+++ b/phpseclib/Crypt/Random.php
@@ -55,9 +55,10 @@ class Random
     {
         if (version_compare(PHP_VERSION, '7.0.0', '>=')) {
             try {
-                return random_bytes($length);
-            } catch (\Error $e) {
-                // If a sufficient source of randomness is unavailable, random_bytes() will emit a warning.
+                return \random_bytes($length);
+            } catch (\Throwable $e) {
+                // If a sufficient source of randomness is unavailable, random_bytes() will throw an
+                // object that implements the Throwable interface (Exception, TypeError, Error).
                 // We don't actually need to do anything here. The string() method should just continue
                 // as normal. Note, however, that if we don't have a sufficient source of randomness for
                 // random_bytes(), most of the other calls here will fail too, so we'll end up using