diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnInstruction.java b/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnInstruction.java
new file mode 100644
index 00000000000..efd798823f3
--- /dev/null
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnInstruction.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.jet.lang.cfg.pseudocode;
+
+public interface ReturnInstruction extends Instruction, JetElementInstruction {
+}
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnNoValueInstruction.java b/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnNoValueInstruction.java
index 1b2fd599491..9f6d4146652 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnNoValueInstruction.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnNoValueInstruction.java
@@ -20,7 +20,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.cfg.Label;
 import org.jetbrains.jet.lang.psi.JetElement;
 
-public class ReturnNoValueInstruction extends AbstractJumpInstruction implements  JetElementInstruction {
+public class ReturnNoValueInstruction extends AbstractJumpInstruction implements ReturnInstruction {
 
     private final JetElement element;
 
@@ -36,7 +36,7 @@ public class ReturnNoValueInstruction extends AbstractJumpInstruction implements
     }
 
     @Override
-    public void accept(InstructionVisitor visitor) {
+    public void accept(@NotNull InstructionVisitor visitor) {
         visitor.visitReturnNoValue(this);
     }
 
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnValueInstruction.java b/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnValueInstruction.java
index 259aace378a..254d15a5c9e 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnValueInstruction.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/cfg/pseudocode/ReturnValueInstruction.java
@@ -21,7 +21,7 @@ import org.jetbrains.jet.lang.cfg.Label;
 import org.jetbrains.jet.lang.psi.JetElement;
 import org.jetbrains.jet.lang.psi.JetExpression;
 
-public class ReturnValueInstruction extends AbstractJumpInstruction implements JetElementInstruction {
+public class ReturnValueInstruction extends AbstractJumpInstruction implements ReturnInstruction {
 
     private final JetElement element;