diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/InstructionImpl.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/InstructionImpl.java
index cff6e4aed68b..795be208bd2e 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/InstructionImpl.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/InstructionImpl.java
@@ -27,7 +27,7 @@ import java.util.Stack;
 /**
  * @author ven
  */
-public class InstructionImpl implements Instruction, Cloneable {
+public class InstructionImpl implements Instruction {
   ArrayList<InstructionImpl> myPred = new ArrayList<InstructionImpl>();
 
   ArrayList<InstructionImpl> mySucc = new ArrayList<InstructionImpl>();
diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/ReadWriteVariableInstructionImpl.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/ReadWriteVariableInstructionImpl.java
index 010191768da2..3ecfd96efdb5 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/ReadWriteVariableInstructionImpl.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/controlFlow/impl/ReadWriteVariableInstructionImpl.java
@@ -25,7 +25,7 @@ import org.jetbrains.plugins.groovy.lang.psi.controlFlow.ReadWriteVariableInstru
 */
 class ReadWriteVariableInstructionImpl extends InstructionImpl implements ReadWriteVariableInstruction {
   private final boolean myIsWrite;
-  public String myName;
+  private final String myName;
 
   ReadWriteVariableInstructionImpl(String varName, PsiElement element, int num, boolean isWrite) {
     super(element, num);