diff --git a/compiler/resolution.common.jvm/src/org/jetbrains/kotlin/load/java/structure/impl/annotationArgumentsImpl.kt b/compiler/resolution.common.jvm/src/org/jetbrains/kotlin/load/java/structure/impl/annotationArgumentsImpl.kt
index abddf924618..bcaa969b539 100644
--- a/compiler/resolution.common.jvm/src/org/jetbrains/kotlin/load/java/structure/impl/annotationArgumentsImpl.kt
+++ b/compiler/resolution.common.jvm/src/org/jetbrains/kotlin/load/java/structure/impl/annotationArgumentsImpl.kt
@@ -22,7 +22,7 @@ import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 
-abstract class JavaAnnotationArgumentImpl(
+sealed class JavaAnnotationArgumentImpl(
     override val name: Name?
 ) : JavaAnnotationArgument {
     companion object Factory {
@@ -44,7 +44,7 @@ abstract class JavaAnnotationArgumentImpl(
                 is PsiReferenceExpression -> JavaEnumValueAnnotationArgumentImpl(argument, name)
                 is PsiArrayInitializerMemberValue -> JavaArrayAnnotationArgumentImpl(argument, name)
                 is PsiAnnotation -> JavaAnnotationAsAnnotationArgumentImpl(argument, name)
-                else -> throw UnsupportedOperationException("Unsupported annotation argument type: $argument")
+                else -> JavaUnknownAnnotationArgumentImpl(name)
             }
         }
     }
@@ -95,3 +95,5 @@ class JavaAnnotationAsAnnotationArgumentImpl(
 ) : JavaAnnotationArgumentImpl(name), JavaAnnotationAsAnnotationArgument {
     override fun getAnnotation() = JavaAnnotationImpl(psiAnnotation)
 }
+
+class JavaUnknownAnnotationArgumentImpl(name: Name?) : JavaAnnotationArgumentImpl(name), JavaUnknownAnnotationArgument
diff --git a/core/compiler.common.jvm/src/org/jetbrains/kotlin/load/java/structure/annotationArguments.kt b/core/compiler.common.jvm/src/org/jetbrains/kotlin/load/java/structure/annotationArguments.kt
index dcbc99b44cd..115fd691f30 100644
--- a/core/compiler.common.jvm/src/org/jetbrains/kotlin/load/java/structure/annotationArguments.kt
+++ b/core/compiler.common.jvm/src/org/jetbrains/kotlin/load/java/structure/annotationArguments.kt
@@ -43,3 +43,5 @@ interface JavaClassObjectAnnotationArgument : JavaAnnotationArgument {
 interface JavaAnnotationAsAnnotationArgument : JavaAnnotationArgument {
     fun getAnnotation(): JavaAnnotation
 }
+
+interface JavaUnknownAnnotationArgument : JavaAnnotationArgument