diff --git a/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/psiUtils.kt b/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/psiUtils.kt
index df92f796797..f1523a61cb3 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/psiUtils.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/psiUtils.kt
@@ -30,7 +30,7 @@ public val PsiElement.endOffset: Int
 public fun PsiElement.getStartOffsetIn(ancestor: PsiElement): Int {
     var offset = 0
     var parent = this
-    while (parent != this) {
+    while (parent != ancestor) {
         offset += parent.getStartOffsetInParent()
         parent = parent.getParent()
     }