diff --git a/MD_JAIL.php b/MD_JAIL.php
index 6199214..b6a923b 100644
--- a/MD_JAIL.php
+++ b/MD_JAIL.php
@@ -106,6 +106,20 @@ final class MD_JAIL {
      */
     public function enforce():void {
 
+        // Special instructions on CLI, so as to not disturb PHPUnit
+        if (PHP_SAPI === 'cli') {
+
+            if (!isset($this->memory_limit)) {
+                throw new MDJailSecurityOptionNotSetException("It has not been specified, which memory limit the script should hold. Set MD_JAIL->memory_limit = string.");
+            }
+            if (!isset($this->max_execution_time)) {
+                throw new MDJailSecurityOptionNotSetException("It has not been specified, which maximum execution time the script should hold. Set MD_JAIL->max_execution_time = integer.");
+            }
+
+            $this->_status = self::STATUS_SPECIFIED;
+            $this->__destruct();
+        }
+
         $this->_apply_memory_limit();
         $this->_apply_time_limit();