diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/api/statements/blocks/GrClosableBlock.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/api/statements/blocks/GrClosableBlock.java
index d5888ed33aa5..b2e7dc6a1c0c 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/api/statements/blocks/GrClosableBlock.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/api/statements/blocks/GrClosableBlock.java
@@ -17,7 +17,6 @@
 package org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks;
 
 import com.intellij.psi.PsiElement;
-import com.intellij.psi.PsiParameter;
 import com.intellij.psi.PsiType;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrParametersOwner;
@@ -43,7 +42,7 @@ public interface GrClosableBlock extends GrExpression, GrCodeBlock, GrParameters
   @Nullable
   PsiType getReturnType();
 
-  PsiParameter[] getAllParameters();
+  GrParameter[] getAllParameters();
 
   @Nullable
   PsiElement getArrow();
diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/blocks/GrClosableBlockImpl.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/blocks/GrClosableBlockImpl.java
index d4269b22ee4d..130647ec42a7 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/blocks/GrClosableBlockImpl.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/blocks/GrClosableBlockImpl.java
@@ -51,7 +51,7 @@ import org.jetbrains.plugins.groovy.refactoring.GroovyNamesUtil;
  * @author ilyas
  */
 public class GrClosableBlockImpl extends GrBlockImpl implements GrClosableBlock {
-  private volatile PsiParameter mySyntheticItParameter;
+  private volatile GrParameter mySyntheticItParameter;
   private GrVariable myOwner;
 
   public GrClosableBlockImpl(@NotNull ASTNode node) {
@@ -124,9 +124,9 @@ public class GrClosableBlockImpl extends GrBlockImpl implements GrClosableBlock
     return GrParameter.EMPTY_ARRAY;
   }
 
-  public PsiParameter[] getAllParameters() {
+  public GrParameter[] getAllParameters() {
     if (hasParametersSection()) return getParameters();
-    return new PsiParameter[]{getSyntheticItParameter()};
+    return new GrParameter[]{getSyntheticItParameter()};
   }
 
   @Override
@@ -168,9 +168,9 @@ public class GrClosableBlockImpl extends GrBlockImpl implements GrClosableBlock
     mySyntheticItParameter = null;
   }
 
-  public PsiParameter getSyntheticItParameter() {
+  public GrParameter getSyntheticItParameter() {
     if (mySyntheticItParameter == null) {
-      PsiParameter fresh = new ClosureSyntheticParameter(this);
+      GrParameter fresh = new ClosureSyntheticParameter(this);
       synchronized (this) {
         if (mySyntheticItParameter == null) {
           mySyntheticItParameter = fresh;