diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
index 00da492f73b..3f1bc34e6c8 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
@@ -3589,7 +3589,6 @@ The "returned" value of try expression with no finally is either the last expres
     private StackValue generateExpressionMatch(StackValue expressionToMatch, JetExpression patternExpression) {
         if (expressionToMatch != null) {
             Type subjectType = expressionToMatch.type;
-            expressionToMatch.dupReceiver(v);
             expressionToMatch.put(subjectType, v);
             JetType condJetType = bindingContext.get(BindingContext.EXPRESSION_TYPE, patternExpression);
             Type condType;
@@ -3614,7 +3613,6 @@ The "returned" value of try expression with no finally is either the last expres
 
     private StackValue generateIsCheck(StackValue expressionToMatch, JetTypeReference typeReference, boolean negated) {
         JetType jetType = bindingContext.get(BindingContext.TYPE, typeReference);
-        expressionToMatch.dupReceiver(v);
         generateInstanceOf(expressionToMatch, jetType, false);
         StackValue value = StackValue.onStack(Type.BOOLEAN_TYPE);
         return negated ? StackValue.not(value) : value;