diff --git a/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/jetPsiUtil.kt b/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/jetPsiUtil.kt
index 7146c3818d3..3cdea0024cf 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/jetPsiUtil.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/jetPsiUtil.kt
@@ -140,6 +140,7 @@ public fun JetDeclaration.isExtensionDeclaration(): Boolean {
 
 public fun JetClassOrObject.isObjectLiteral(): Boolean = this is JetObjectDeclaration && isObjectLiteral()
 
+//TODO: strange method, and not only Kotlin specific (also Java)
 public fun PsiElement.parameterIndex(): Int {
     val parent = getParent()
     return when {