diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetExpression.java b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetExpression.java
index 55631f652b5..df6e2312ddd 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetExpression.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetExpression.java
@@ -16,13 +16,12 @@
 
 package org.jetbrains.jet.lang.psi;
 
-import com.intellij.psi.NavigatablePsiElement;
 import org.jetbrains.annotations.NotNull;
 
 /**
  * @author Nikolay Krasko
  */
-public interface JetExpression extends NavigatablePsiElement, JetElement {
+public interface JetExpression extends JetElement {
     @Override
     void accept(@NotNull JetVisitorVoid visitor);
 
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetNamedFunction.java b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetNamedFunction.java
index 68749d7c63b..0b6491f770c 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetNamedFunction.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetNamedFunction.java
@@ -36,7 +36,7 @@ import java.util.List;
 /**
  * @author max
  */
-public class JetNamedFunction extends JetTypeParameterListOwnerStub<PsiJetFunctionStub> implements JetNamed, JetDeclarationWithBody, JetModifierListOwner, JetFunction {
+public class JetNamedFunction extends JetTypeParameterListOwnerStub<PsiJetFunctionStub> implements JetFunction {
     public JetNamedFunction(@NotNull ASTNode node) {
         super(node);
     }