diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/types/IrTypeSystemContext.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/types/IrTypeSystemContext.kt
index a82921a5d91..99acfb35440 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/types/IrTypeSystemContext.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/types/IrTypeSystemContext.kt
@@ -10,7 +10,6 @@ import org.jetbrains.kotlin.builtins.PrimitiveType
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
-import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.descriptors.IrBuiltIns
 import org.jetbrains.kotlin.ir.expressions.IrConst
@@ -23,13 +22,11 @@ import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.FqNameUnsafe
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
 import org.jetbrains.kotlin.types.TypeSystemCommonBackendContext
 import org.jetbrains.kotlin.types.Variance
 import org.jetbrains.kotlin.types.model.*
 import org.jetbrains.kotlin.ir.types.isPrimitiveType as irTypePredicates_isPrimitiveType
 
-@OptIn(ObsoleteDescriptorBasedAPI::class)
 interface IrTypeSystemContext : TypeSystemContext, TypeSystemCommonSuperTypesContext, TypeSystemCommonBackendContext {
 
     val irBuiltIns: IrBuiltIns
@@ -309,7 +306,7 @@ interface IrTypeSystemContext : TypeSystemContext, TypeSystemCommonSuperTypesCon
 
     override fun KotlinTypeMarker.getAnnotationFirstArgumentValue(fqName: FqName): Any? =
         (this as? IrType)?.annotations?.firstOrNull { annotation ->
-            annotation.symbol.owner.parentAsClass.descriptor.fqNameSafe == fqName
+            annotation.symbol.owner.parentAsClass.hasEqualFqName(fqName)
         }?.run {
             if (valueArgumentsCount > 0) (getValueArgument(0) as? IrConst<*>)?.value else null
         }