diff --git a/rd-kt/rd-framework/src/main/kotlin/com/jetbrains/rd/framework/Interfaces.kt b/rd-kt/rd-framework/src/main/kotlin/com/jetbrains/rd/framework/Interfaces.kt
index d5f975c8d..bc679eaf3 100644
--- a/rd-kt/rd-framework/src/main/kotlin/com/jetbrains/rd/framework/Interfaces.kt
+++ b/rd-kt/rd-framework/src/main/kotlin/com/jetbrains/rd/framework/Interfaces.kt
@@ -107,8 +107,16 @@ class LazyCompanionMarshaller<T : Any>(
     val classLoader: ClassLoader,
     val fqn: String
 ) : IMarshaller<T> {
+    companion object {
+        private val possibleFields = listOf<String>("Companion", "INSTANCE")
+    }
     private val lazy = lazy(LazyThreadSafetyMode.PUBLICATION) {
-        Class.forName(fqn, true, classLoader).getDeclaredField("Companion").get(null) as IMarshaller<T>
+        val clazz = Class.forName(fqn, true, classLoader)
+        val declaredFields = clazz.declaredFields
+
+        declaredFields.firstOrNull { possibleFields.contains(it.name) }?.get(null) as? IMarshaller<T> ?: run {
+            error("There are none of the fields ${possibleFields.joinToString()} in $clazz")
+        }
     }
 
     override val _type: KClass<*>
diff --git a/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/MarshallersCollector.kt b/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/MarshallersCollector.kt
index f211371c1..f120d1cc4 100644
--- a/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/MarshallersCollector.kt
+++ b/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/MarshallersCollector.kt
@@ -1,20 +1,19 @@
 package com.jetbrains.rd.generator.nova
 
-import com.jetbrains.rd.util.hash.getPlatformIndependentHash
 import java.io.File
 
 
 interface MarshallersCollector {
     val shouldGenerateRegistrations: Boolean
 
-    fun addMarshaller(namespace: String, name: String)
+    fun addMarshaller(fqn: String, rdid: Long)
 }
 
 object DisabledMarshallersCollector : MarshallersCollector {
     override val shouldGenerateRegistrations: Boolean
         get() = true
 
-    override fun addMarshaller(namespace: String, name: String) {
+    override fun addMarshaller(fqn: String, rdid: Long) {
     }
 }
 
@@ -24,8 +23,8 @@ class RealMarshallersCollector(val marshallersFile: File) : MarshallersCollector
     override val shouldGenerateRegistrations: Boolean
         get() = false // We may want to add a separate setting here, but for now just disable it
 
-    override fun addMarshaller(namespace: String, name: String) {
-        marshallers.add("${name.getPlatformIndependentHash()}:${namespace}.${name}")
+    override fun addMarshaller(fqn: String, rdid: Long) {
+        marshallers.add("${rdid}:${fqn}")
     }
 
     fun close() {
diff --git a/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/Kotlin11Generator.kt b/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/Kotlin11Generator.kt
index ce5769189..da6b34926 100644
--- a/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/Kotlin11Generator.kt
+++ b/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/Kotlin11Generator.kt
@@ -3,6 +3,7 @@ package com.jetbrains.rd.generator.nova.kotlin
 import com.jetbrains.rd.generator.nova.*
 import com.jetbrains.rd.generator.nova.Enum
 import com.jetbrains.rd.generator.nova.FlowKind.*
+import com.jetbrains.rd.generator.nova.getSetting
 import com.jetbrains.rd.generator.nova.kotlin.KotlinSanitizer.sanitize
 import com.jetbrains.rd.generator.nova.util.capitalizeInvariant
 import com.jetbrains.rd.generator.nova.util.decapitalizeInvariant
@@ -36,6 +37,9 @@ open class Kotlin11Generator(
 
     object Intrinsic : SettingWithDefault<KotlinIntrinsicMarshaller, Declaration>(KotlinIntrinsicMarshaller.default)
 
+    val IDeclaration.marshallerRdid: Long get() = getSetting(Intrinsic)?.rdid ?: name.getPlatformIndependentHash()
+    val IDeclaration.marshallerFqn: String get() = getSetting(Intrinsic)?.marshallerObjectFqn ?: "${namespace}.${name}"
+
     object Attributes : ISetting<Array<String>, SettingsHolder>
     object PublicCtors: ISetting<Unit, Declaration>
 
@@ -514,12 +518,13 @@ open class Kotlin11Generator(
     }
 
     protected fun PrettyPrinter.companionTrait(decl: Declaration, collector: MarshallersCollector) {
+        val rdid = decl.marshallerRdid
         if (decl.isConcrete) {
             println()
-            collector.addMarshaller(decl.namespace, decl.name)
+            collector.addMarshaller(decl.marshallerFqn, rdid)
             block("companion object : IMarshaller<${decl.name}>") {
                 + "override val _type: KClass<${decl.name}> = ${decl.name}::class"
-                + "override val id: RdId get() = RdId(${decl.name.getPlatformIndependentHash()})"
+                + "override val id: RdId get() = RdId(${rdid})"
                 println()
                 readerTrait(decl)
                 println()
@@ -542,10 +547,10 @@ open class Kotlin11Generator(
         }
         else if (decl.isOpen) {
             println()
-            collector.addMarshaller(decl.namespace, decl.name)
+            collector.addMarshaller(decl.marshallerFqn, rdid)
             block("companion object : IMarshaller<${decl.name}>, IAbstractDeclaration<${decl.name}>") {
                 +"override val _type: KClass<${decl.name}> = ${decl.name}::class"
-                +"override val id: RdId get() = RdId(${decl.name.getPlatformIndependentHash()})"
+                +"override val id: RdId get() = RdId($rdid)"
                 println()
                 readerTrait(decl)
                 println()
@@ -614,15 +619,17 @@ open class Kotlin11Generator(
         block("override fun registerSerializersCore(serializers: ISerializers) ") {
             var first = true
             types.filter { !it.isAbstract }.filterIsInstance<IType>().forEach {
-                if (it is Declaration && it.getSetting(Intrinsic) == null) {
+                if (it is Declaration) {
                     if (first && collector.shouldGenerateRegistrations) {
                         +"val classLoader = javaClass.classLoader"
                         first = false
                     }
+                    val rdid = it.marshallerRdid
+                    val fqn = it.marshallerFqn
 
-                    collector.addMarshaller(it.namespace, it.name)
+                    collector.addMarshaller(fqn, rdid)
                     if (collector.shouldGenerateRegistrations) {
-                        println("serializers.register(LazyCompanionMarshaller(RdId(${it.name.getPlatformIndependentHash()}), classLoader, \"${it.namespace}.${it.name}\"))")
+                        println("serializers.register(LazyCompanionMarshaller(RdId(${rdid}), classLoader, \"${fqn}\"))")
                     }
                 } else {
                     println("serializers.register(${it.serializerRef(decl, true)})")
@@ -631,7 +638,7 @@ open class Kotlin11Generator(
 
             if (decl is Root) {
                 decl.toplevels.forEach {
-                    collector.addMarshaller(decl.namespace, decl.name)
+                    collector.addMarshaller(decl.marshallerFqn, it.marshallerRdid)
                     if (collector.shouldGenerateRegistrations) {
                         println(it.sanitizedName(decl) + ".register(serializers)")
                     }
@@ -1114,7 +1121,7 @@ open class Kotlin11Generator(
                 constantTrait(decl)
                 println()
                 + "override val _type: KClass<${decl.name}> = ${decl.name}::class"
-                + "override val id: RdId get() = RdId(${decl.name.getPlatformIndependentHash()})"
+                + "override val id: RdId get() = RdId(${decl.marshallerRdid})"
                 println()
                 block("override fun read(ctx: SerializationCtx, buffer: AbstractBuffer): ${decl.substitutedName(decl)}") {
                     +"return marshaller.read(ctx, buffer)"
diff --git a/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/KotlinIntrinsicMarshaller.kt b/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/KotlinIntrinsicMarshaller.kt
index 630bfba2f..1dd013dd1 100644
--- a/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/KotlinIntrinsicMarshaller.kt
+++ b/rd-kt/rd-gen/src/main/kotlin/com/jetbrains/rd/generator/nova/kotlin/KotlinIntrinsicMarshaller.kt
@@ -4,7 +4,7 @@ package com.jetbrains.rd.generator.nova.kotlin
 /**
  * [marshallerObjectFqn] Fqn of object: inheritor of IMarshaller
  */
-data class KotlinIntrinsicMarshaller(val marshallerObjectFqn:String?) {
+data class KotlinIntrinsicMarshaller(val marshallerObjectFqn:String?, val rdid: Long? = null) {
     companion object {
         val default = KotlinIntrinsicMarshaller(null)
     }