diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/symbols/impl/ConeClassLikeLookupTagImpl.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/symbols/impl/ConeClassLikeLookupTagImpl.kt
index 1383c5fb40c..b48feaf2b74 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/symbols/impl/ConeClassLikeLookupTagImpl.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/symbols/impl/ConeClassLikeLookupTagImpl.kt
@@ -13,6 +13,11 @@ import org.jetbrains.kotlin.name.ClassId
 annotation class LookupTagInternals
 
 class ConeClassLikeLookupTagImpl(override val classId: ClassId) : ConeClassLikeLookupTag() {
+
+    init {
+        assert(!classId.isLocal) { "You should use ConeClassLookupTagWithFixedSymbol for local $classId!" }
+    }
+
     @LookupTagInternals
     var boundSymbol: OneElementWeakMap<FirSession, FirClassLikeSymbol<*>?>? = null