diff --git a/analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/Delegation/Delegation.k2.txt b/analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/Delegation/Delegation.k2.txt
deleted file mode 100644
index c29817514d3..00000000000
--- a/analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/Delegation/Delegation.k2.txt
+++ /dev/null
@@ -1,47 +0,0 @@
-PsiJetFileStubImpl[package=]
-  PACKAGE_DIRECTIVE
-  IMPORT_LIST
-  CLASS[classId=/Delegation, fqName=Delegation, isEnumEntry=false, isInterface=false, isLocal=false, isTopLevel=true, name=Delegation, superNames=[T]]
-    MODIFIER_LIST[public final]
-    PRIMARY_CONSTRUCTOR[fqName=null, hasBody=false, isDelegatedCallToThis=false, isExtension=false, isTopLevel=false, name=Delegation]
-      MODIFIER_LIST[public]
-      VALUE_PARAMETER_LIST
-        VALUE_PARAMETER[fqName=null, hasDefaultValue=true, hasValOrVar=false, isMutable=false, name=c]
-          TYPE_REFERENCE
-            USER_TYPE
-              USER_TYPE
-                REFERENCE_EXPRESSION[referencedName=kotlin]
-              REFERENCE_EXPRESSION[referencedName=Int]
-          REFERENCE_EXPRESSION[referencedName=COMPILED_CODE]
-        VALUE_PARAMETER[fqName=null, hasDefaultValue=false, hasValOrVar=false, isMutable=false, name=a]
-          TYPE_REFERENCE
-            USER_TYPE
-              REFERENCE_EXPRESSION[referencedName=A]
-    SUPER_TYPE_LIST
-      SUPER_TYPE_ENTRY
-        TYPE_REFERENCE
-          USER_TYPE
-            REFERENCE_EXPRESSION[referencedName=T]
-    CLASS_BODY
-      PROPERTY[fqName=Delegation.c, hasDelegate=false, hasDelegateExpression=false, hasInitializer=false, hasReturnTypeRef=true, isExtension=false, isTopLevel=false, isVar=false, name=c]
-        MODIFIER_LIST[public final]
-        TYPE_REFERENCE
-          USER_TYPE
-            USER_TYPE
-              REFERENCE_EXPRESSION[referencedName=kotlin]
-            REFERENCE_EXPRESSION[referencedName=Int]
-      PROPERTY[fqName=Delegation.g, hasDelegate=false, hasDelegateExpression=false, hasInitializer=false, hasReturnTypeRef=true, isExtension=false, isTopLevel=false, isVar=false, name=g]
-        MODIFIER_LIST[open public]
-        TYPE_REFERENCE
-          USER_TYPE
-            USER_TYPE
-              REFERENCE_EXPRESSION[referencedName=kotlin]
-            REFERENCE_EXPRESSION[referencedName=Int]
-      FUN[fqName=Delegation.ff, hasBlockBody=true, hasBody=true, hasTypeParameterListBeforeFunctionName=false, isExtension=false, isTopLevel=false, mayHaveContract=false, name=ff]
-        MODIFIER_LIST[public final]
-        VALUE_PARAMETER_LIST
-        TYPE_REFERENCE
-          USER_TYPE
-            USER_TYPE
-              REFERENCE_EXPRESSION[referencedName=kotlin]
-            REFERENCE_EXPRESSION[referencedName=Int]
diff --git a/analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/Delegation/Delegation.kt b/analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/Delegation/Delegation.kt
index e89e93081f3..c83d90f6950 100644
--- a/analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/Delegation/Delegation.kt
+++ b/analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/Delegation/Delegation.kt
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 interface T {
     fun f()
     val g: Int
diff --git a/compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/FirElementSerializer.kt b/compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/FirElementSerializer.kt
index aa051774c4f..84d97049213 100644
--- a/compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/FirElementSerializer.kt
+++ b/compiler/fir/fir-serialization/src/org/jetbrains/kotlin/fir/serialization/FirElementSerializer.kt
@@ -440,7 +440,7 @@ class FirElementSerializer private constructor(
             hasAnnotations,
             ProtoEnumFlags.visibility(normalizeVisibility(property)),
             ProtoEnumFlags.modality(modality),
-            ProtoBuf.MemberKind.DECLARATION,
+            property.memberKind(),
             property.isVar, hasGetter, hasSetter, hasConstant, property.isConst, property.isLateInit,
             property.isExternal, property.delegateFieldSymbol != null, property.isExpect
         )
@@ -492,6 +492,13 @@ class FirElementSerializer private constructor(
         return builder
     }
 
+    private fun FirProperty.memberKind(): MemberKind {
+        return when (origin) {
+            FirDeclarationOrigin.Delegated -> MemberKind.DELEGATION
+            else -> MemberKind.DECLARATION
+        }
+    }
+
     fun functionProto(function: FirFunction): ProtoBuf.Function.Builder? = whileAnalysing(session, function) {
         val builder = ProtoBuf.Function.newBuilder()
         val simpleFunction = function as? FirSimpleFunction
diff --git a/libraries/kotlinx-metadata/jvm/test/kotlinx/metadata/test/FlagDelegatesTest.kt b/libraries/kotlinx-metadata/jvm/test/kotlinx/metadata/test/FlagDelegatesTest.kt
index bafcfa08b05..4966bcde057 100644
--- a/libraries/kotlinx-metadata/jvm/test/kotlinx/metadata/test/FlagDelegatesTest.kt
+++ b/libraries/kotlinx-metadata/jvm/test/kotlinx/metadata/test/FlagDelegatesTest.kt
@@ -208,7 +208,7 @@ class FlagDelegatesTest {
         val foo = Foo::class.java.readMetadataAsKmClass()
         val props = foo.properties.associateBy { it.name }
         with(props["x"]!!) {
-            assertEquals(MemberKind.DECLARATION, kind) // TODO: KT-62581
+            assertEquals(MemberKind.DELEGATION, kind)
             assertFalse(isDelegated)
             assertFalse(getter.isNotDefault)
         }