diff --git a/j2k/src/org/jetbrains/jet/j2k/visitors/Dispatcher.kt b/j2k/src/org/jetbrains/jet/j2k/visitors/Dispatcher.kt
index 13519d0dbce..0941f08a9af 100644
--- a/j2k/src/org/jetbrains/jet/j2k/visitors/Dispatcher.kt
+++ b/j2k/src/org/jetbrains/jet/j2k/visitors/Dispatcher.kt
@@ -19,6 +19,6 @@ package org.jetbrains.jet.j2k.visitors
 import org.jetbrains.jet.j2k.Converter
 import org.jetbrains.jet.j2k.TypeConverter
 
-open class Dispatcher(converter: Converter, typeConverter: TypeConverter) {
+class Dispatcher(converter: Converter, typeConverter: TypeConverter) {
     var expressionVisitor: ExpressionVisitor = ExpressionVisitor(converter, typeConverter)
 }
diff --git a/j2k/src/org/jetbrains/jet/j2k/visitors/TypeVisitor.kt b/j2k/src/org/jetbrains/jet/j2k/visitors/TypeVisitor.kt
index db3ce2944fc..4702d1d1554 100644
--- a/j2k/src/org/jetbrains/jet/j2k/visitors/TypeVisitor.kt
+++ b/j2k/src/org/jetbrains/jet/j2k/visitors/TypeVisitor.kt
@@ -27,7 +27,7 @@ import org.jetbrains.jet.j2k.TypeConverter
 
 private val PRIMITIVE_TYPES_NAMES = JvmPrimitiveType.values().map { it.getName() }
 
-open class TypeVisitor(private val converter: TypeConverter) : PsiTypeVisitor<Type>() {
+class TypeVisitor(private val converter: TypeConverter) : PsiTypeVisitor<Type>() {
     override fun visitPrimitiveType(primitiveType: PsiPrimitiveType): Type {
         val name = primitiveType.getCanonicalText()
         return if (name == "void") {