diff --git a/application/libraries/monpas/compactsop/Compacteonderdelen.php b/application/libraries/monpas/compactsop/Compacteonderdelen.php
index a201167..7c4d33f 100644
--- a/application/libraries/monpas/compactsop/Compacteonderdelen.php
+++ b/application/libraries/monpas/compactsop/Compacteonderdelen.php
@@ -157,8 +157,7 @@ class Compacteonderdelen
 
     private function loopOnderdelen()
     {
-        if (!$this->onderdelen) return;
-        foreach ($this->onderdelen as $index => $this->onderdeel) {
+        foreach ($this->onderdelen ? : [] as $index => $this->onderdeel) {
             $this->switchOnderdelen();
             $this->setOnderdeel();
             $this->setOnderdelen();