diff --git a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt
index 7975b573b98..ce819c2c3ef 100644
--- a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt
+++ b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt
@@ -21,6 +21,7 @@ import org.jetbrains.kotlin.ir.declarations.StageController
 import org.jetbrains.kotlin.ir.declarations.stageController
 import org.jetbrains.kotlin.ir.util.DeclarationStubGenerator
 import org.jetbrains.kotlin.ir.util.ExternalDependenciesGenerator
+import org.jetbrains.kotlin.ir.util.noUnboundLeft
 import org.jetbrains.kotlin.library.KotlinLibrary
 import org.jetbrains.kotlin.library.resolver.KotlinLibraryResolveResult
 import org.jetbrains.kotlin.name.FqName
@@ -69,6 +70,7 @@ fun compile(
     val irFiles = allModules.flatMap { it.files }
 
     deserializer.postProcess()
+    symbolTable.noUnboundLeft("Unbound symbols at the end of linker")
 
     moduleFragment.files.clear()
     moduleFragment.files += irFiles
diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/KotlinIrLinker.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/KotlinIrLinker.kt
index 6097cf0629b..e7ceddc3f4a 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/KotlinIrLinker.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/KotlinIrLinker.kt
@@ -573,7 +573,8 @@ abstract class KotlinIrLinker(
             }
         }
 
-        symbolTable.noUnboundLeft("unbound after fake overrides:")
+        // TODO: fix IrPluginContext to make it not produce additional external reference
+        // symbolTable.noUnboundLeft("unbound after fake overrides:")
     }
 
     // The issue here is that an expect can not trigger its actual deserialization by reachability
diff --git a/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt b/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt
index d009323c0a3..2abb6c3bed9 100644
--- a/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt
+++ b/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt
@@ -229,6 +229,7 @@ fun loadIr(
             }
 
             val moduleFragment = psi2IrContext.generateModuleFragmentWithPlugins(project, mainModule.files, irLinker)
+            symbolTable.noUnboundLeft("Unbound symbols left after linker")
 
             // TODO: not sure whether this check should be enabled by default. Add configuration key for it.
             val mangleChecker = ManglerChecker(JsManglerIr, Ir2DescriptorManglerAdapter(JsManglerDesc))