diff --git a/samples/lambdacalc/languages/samples.lambdacalc/models/structure.mps b/samples/lambdacalc/languages/samples.lambdacalc/models/structure.mps
index c131dcf5..6e28bf6c 100644
--- a/samples/lambdacalc/languages/samples.lambdacalc/models/structure.mps
+++ b/samples/lambdacalc/languages/samples.lambdacalc/models/structure.mps
@@ -212,6 +212,9 @@
       <property role="20lbJX" value="1" />
       <ref role="20lvS9" node="7_8aRkgDGQp" resolve="LetVarBind" />
     </node>
+    <node concept="PrWs8" id="1Lr58WGbe9B" role="PzmwI">
+      <ref role="PrY4T" to="tpck:2WmWrdnSpX2" resolve="ICanSuppressErrors" />
+    </node>
   </node>
   <node concept="1TIwiD" id="7_8aRkgEZ_W">
     <property role="EcuMT" value="8739282858703321468" />