diff --git a/src/org/jetbrains/jet/j2k/Converter.java b/src/org/jetbrains/jet/j2k/Converter.java
index 84531d4877e..016bcd059d0 100644
--- a/src/org/jetbrains/jet/j2k/Converter.java
+++ b/src/org/jetbrains/jet/j2k/Converter.java
@@ -196,7 +196,7 @@ public class Converter {
     private static List<Parameter> createParametersFromFields(@NotNull List<? extends Field> fields) {
         List<Parameter> result = new LinkedList<Parameter>();
         for (Field f : fields)
-            result.add(new Parameter(new IdentifierImpl("_" + f.getIdentifier().getName()), f.getType(), false));
+            result.add(new Parameter(new IdentifierImpl("_" + f.getIdentifier().getName()), f.getType(), true));
         return result;
     }
 
@@ -670,7 +670,7 @@ public class Converter {
         return new Parameter(
                 new IdentifierImpl(parameter.getName()),
                 typeToType(parameter.getType(), ConverterUtil.isAnnotatedAsNotNull(parameter.getModifierList())),
-                false
+                true
         );
     }
 
diff --git a/src/org/jetbrains/jet/j2k/ast/Parameter.kt b/src/org/jetbrains/jet/j2k/ast/Parameter.kt
index 71a96be0c30..978fa1f2514 100644
--- a/src/org/jetbrains/jet/j2k/ast/Parameter.kt
+++ b/src/org/jetbrains/jet/j2k/ast/Parameter.kt
@@ -2,7 +2,7 @@ package org.jetbrains.jet.j2k.ast
 
 import org.jetbrains.jet.j2k.ast.types.Type
 
-public open class Parameter(val identifier : Identifier, val `type` : Type, val readOnly: Boolean = false) : Expression() {
+public open class Parameter(val identifier : Identifier, val `type` : Type, val readOnly: Boolean = true) : Expression() {
     public override fun toKotlin() : String {
         val vararg : String = (if (`type`.getKind() == INode.Kind.VARARG)
             "vararg" + " "
@@ -11,7 +11,7 @@ public open class Parameter(val identifier : Identifier, val `type` : Type, val
         val `var` : String? = (if (readOnly)
             ""
         else
-            "var" + " ")
+            "var ")
         return vararg + `var` + identifier.toKotlin() + " : " + `type`.toKotlin()
     }
 }