diff --git a/shacl/kinderzuschlag.ttl b/shacl/kinderzuschlag.ttl
index 8b488fd..aa0a3dd 100644
--- a/shacl/kinderzuschlag.ttl
+++ b/shacl/kinderzuschlag.ttl
@@ -31,6 +31,11 @@ ff:MainPersonShape a sh:NodeShape, ff:EligibilityConstraint ;
         sh:minCount 1 ;
         sh:maxCount 1 ;
     ] ;
+    sh:property [
+        sh:path ff:paysRentCold ;
+        sh:minCount 1 ;
+        sh:maxCount 1 ;
+    ] ;
     sh:property [
         sh:path ff:receivesWohngeld ;
         sh:message "[optional]" ;