diff --git a/src/org/jetbrains/jet/j2k/ast/DummyStringExpression.kt b/src/org/jetbrains/jet/j2k/ast/DummyStringExpression.kt
index 3583bb8ae4a..286cbea4caa 100644
--- a/src/org/jetbrains/jet/j2k/ast/DummyStringExpression.kt
+++ b/src/org/jetbrains/jet/j2k/ast/DummyStringExpression.kt
@@ -2,5 +2,5 @@ package org.jetbrains.jet.j2k.ast
 
 
 public open class DummyStringExpression(val string: String): Expression() {
-    public override fun toKotlin() = string
+    public override fun toKotlin(): String = string
 }