diff --git a/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeAnnotationChecker.kt b/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeAnnotationChecker.kt
index db8eff03468..794cf0f671c 100644
--- a/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeAnnotationChecker.kt
+++ b/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeAnnotationChecker.kt
@@ -13,9 +13,9 @@ import org.jetbrains.kotlin.fir.analysis.checkers.expression.FirAnnotationCallCh
 import org.jetbrains.kotlin.fir.analysis.checkers.findClosestClassOrObject
 import org.jetbrains.kotlin.fir.correspondingProperty
 import org.jetbrains.kotlin.fir.declarations.FirValueParameter
+import org.jetbrains.kotlin.fir.declarations.toAnnotationClassId
 import org.jetbrains.kotlin.fir.declarations.utils.fromPrimaryConstructor
 import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
-import org.jetbrains.kotlin.fir.expressions.classId
 import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.toFirRegularClassSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.ConeClassLikeLookupTagImpl
@@ -76,7 +76,7 @@ object FirParcelizeAnnotationChecker : FirAnnotationCallChecker() {
         val annotationContainer = context.annotationContainers.lastOrNull()
         val duplicatingAnnotationCount = annotationContainer
             ?.annotations
-            ?.filter { it.classId in TYPE_PARCELER_CLASS_IDS }
+            ?.filter { it.toAnnotationClassId(context.session) in TYPE_PARCELER_CLASS_IDS }
             ?.mapNotNull { it.typeArguments.takeIf { it.size == 2 }?.first()?.toConeTypeProjection()?.type }
             ?.count { it == thisMappedType }
 
diff --git a/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeClassChecker.kt b/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeClassChecker.kt
index 88ea43f906b..982ffb0012a 100644
--- a/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeClassChecker.kt
+++ b/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeClassChecker.kt
@@ -12,12 +12,8 @@ import org.jetbrains.kotlin.diagnostics.reportOn
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
 import org.jetbrains.kotlin.fir.analysis.checkers.declaration.FirClassChecker
-import org.jetbrains.kotlin.fir.declarations.FirClass
-import org.jetbrains.kotlin.fir.declarations.FirRegularClass
-import org.jetbrains.kotlin.fir.declarations.constructors
-import org.jetbrains.kotlin.fir.declarations.delegateFieldsMap
+import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.declarations.utils.*
-import org.jetbrains.kotlin.fir.expressions.classId
 import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.lookupSuperTypes
 import org.jetbrains.kotlin.fir.symbols.impl.ConeClassLikeLookupTagImpl
@@ -124,10 +120,10 @@ fun FirClassSymbol<*>?.isParcelize(session: FirSession): Boolean {
     }
 
     if (this == null) return false
-    if (this.annotations.any { it.classId in PARCELIZE_CLASS_CLASS_IDS }) return true
-    return resolvedSuperTypeRefs.any {
-        val symbol = it.type.fullyExpandedType(session).toRegularClassSymbol(session) ?: return@any false
-        symbol.annotations.any { it.classId in PARCELIZE_CLASS_CLASS_IDS }
+    if (this.annotations.any { it.toAnnotationClassId(session) in PARCELIZE_CLASS_CLASS_IDS }) return true
+    return resolvedSuperTypeRefs.any { superTypeRef ->
+        val symbol = superTypeRef.type.fullyExpandedType(session).toRegularClassSymbol(session) ?: return@any false
+        symbol.annotations.any { it.toAnnotationClassId(session) in PARCELIZE_CLASS_CLASS_IDS }
     }
 }
 
diff --git a/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeConstructorChecker.kt b/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeConstructorChecker.kt
index 3a04133463f..9d96faabcc8 100644
--- a/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeConstructorChecker.kt
+++ b/plugins/parcelize/parcelize-compiler/parcelize.k2/src/org/jetbrains/kotlin/parcelize/fir/diagnostics/FirParcelizeConstructorChecker.kt
@@ -13,7 +13,7 @@ import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
 import org.jetbrains.kotlin.fir.analysis.checkers.declaration.FirConstructorChecker
 import org.jetbrains.kotlin.fir.declarations.FirConstructor
 import org.jetbrains.kotlin.fir.declarations.FirRegularClass
-import org.jetbrains.kotlin.fir.expressions.classId
+import org.jetbrains.kotlin.fir.declarations.toAnnotationClassId
 import org.jetbrains.kotlin.parcelize.ParcelizeNames
 
 object FirParcelizeConstructorChecker : FirConstructorChecker() {
@@ -38,7 +38,7 @@ object FirParcelizeConstructorChecker : FirConstructorChecker() {
                 }
                 if (valueParameter.defaultValue == null) {
                     val illegalAnnotation = valueParameter.annotations.firstOrNull {
-                        it.classId in ParcelizeNames.IGNORED_ON_PARCEL_CLASS_IDS
+                        it.toAnnotationClassId(context.session) in ParcelizeNames.IGNORED_ON_PARCEL_CLASS_IDS
                     }
                     if (illegalAnnotation != null) {
                         reporter.reportOn(