diff --git a/languages/jetbrains.mps.lang.typesystem2/languageModels/structure.mps b/languages/jetbrains.mps.lang.typesystem2/languageModels/structure.mps
index 098524f4..b1ea152d 100644
--- a/languages/jetbrains.mps.lang.typesystem2/languageModels/structure.mps
+++ b/languages/jetbrains.mps.lang.typesystem2/languageModels/structure.mps
@@ -10,8 +10,8 @@
     <import index="tp25" ref="r:00000000-0000-4000-0000-011c89590301(jetbrains.mps.lang.smodel.structure)" />
     <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" />
     <import index="5j4j" ref="r:c8fb1c5e-8204-4904-a38f-678899d447c1(jetbrains.mps.logic.structure)" />
-    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" implicit="true" />
     <import index="tpce" ref="r:00000000-0000-4000-0000-011c89590292(jetbrains.mps.lang.structure.structure)" implicit="true" />
+    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" implicit="true" />
   </imports>
   <registry>
     <language id="c72da2b9-7cce-4447-8389-f407dc1158b7" name="jetbrains.mps.lang.structure">
@@ -521,8 +521,8 @@
       <property role="20lbJX" value="1..n" />
       <ref role="20lvS9" node="6p0DfM0a3TO" resolve="Body" />
     </node>
-    <node concept="PrWs8" id="4EfgX2ET5bO" role="PzmwI">
-      <ref role="PrY4T" to="tpck:h0TrEE$" resolve="INamedConcept" />
+    <node concept="PrWs8" id="3NRKQ2BIeUB" role="PzmwI">
+      <ref role="PrY4T" to="tpee:hCUYCKd" resolve="IValidIdentifier" />
     </node>
     <node concept="PrWs8" id="1ffsG7bN0QR" role="PzmwI">
       <ref role="PrY4T" to="5j4j:7E86$tK$Rgo" resolve="LogicalVariableScope" />