diff --git a/kubernetes/helm/openslice/templates/portalweb-config.yaml b/kubernetes/helm/openslice/templates/portalweb-config.yaml
index 35e9c505477b945c3aef7f422b769140cd9525b5..0ce4191dedd8d634c51cc0781e1afbf03ca6534e 100644
--- a/kubernetes/helm/openslice/templates/portalweb-config.yaml
+++ b/kubernetes/helm/openslice/templates/portalweb-config.yaml
@@ -10,5 +10,6 @@ metadata:
     {{- include "openslice.labels" . | nindent 4 }}
 data:
   config.js: |
-    {{- tpl (.Files.Get "files/org.etsi.osl.portal.web/src/js/config.js") . | nindent 4 }}
+    {{- $configJs := .Files.Get "files/org.etsi.osl.portal.web/src/js/config.js" | required "config.js is required" }}
+    {{ tpl $configJs . | nindent 4 }}
     
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