diff --git a/lib/openpgp_crypt_rsa.php b/lib/openpgp_crypt_rsa.php
index b04c946..2540879 100644
--- a/lib/openpgp_crypt_rsa.php
+++ b/lib/openpgp_crypt_rsa.php
@@ -222,6 +222,8 @@ static function try_decrypt_session($key, $edata) {
         $data = $key->decrypt($edata);
     } catch (\RuntimeException $e) {
         return NULL;
+    } catch (\OutOfRangeException $e) {
+        return NULL;
     }
 
     if(!$data) return NULL;