diff --git a/src/MetaModel/Model/MethodCall.php b/src/MetaModel/Model/MethodCall.php
index 45e07b2..224d4c6 100755
--- a/src/MetaModel/Model/MethodCall.php
+++ b/src/MetaModel/Model/MethodCall.php
@@ -2,6 +2,7 @@
 
 namespace MetaModel\Model;
 
+use MetaModel\ExecutionException;
 use MetaModel\MetaModel;
 
 /**
@@ -28,6 +29,10 @@ public function execute(MetaModel $metaModel)
     {
         $object = $this->subNode->execute($metaModel);
 
+        if (is_null($object)) {
+            throw new ExecutionException("Calling method '$this->method' on null");
+        }
+
         $reflectionMethod = new \ReflectionMethod($object, $this->method);
 
         // God mode