diff --git a/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinLightClassForExplicitDeclaration.java b/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinLightClassForExplicitDeclaration.java
index 6682a8125d5..a0ca44e8415 100644
--- a/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinLightClassForExplicitDeclaration.java
+++ b/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinLightClassForExplicitDeclaration.java
@@ -85,7 +85,7 @@ public class KotlinLightClassForExplicitDeclaration extends AbstractLightClass i
     @Nullable
     private PsiModifierList modifierList;
 
-    private NullableLazyValue<PsiTypeParameterList> typeParameterList = new NullableLazyValue<PsiTypeParameterList>() {
+    private final NullableLazyValue<PsiTypeParameterList> typeParameterList = new NullableLazyValue<PsiTypeParameterList>() {
         @Nullable
         @Override
         protected PsiTypeParameterList compute() {