diff --git a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt
index 25b8d48f449..d74cf5a1995 100644
--- a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt
+++ b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt
@@ -82,7 +82,9 @@ class LookupCancelWatcher(project: Project) : AbstractProjectComponent(project)
                 val offset = lookup.currentItem?.getUserData(AUTO_POPUP_AT)
                 if (offset != null) {
                     lastReminiscence?.dispose()
-                    lastReminiscence = Reminiscence(lookup.editor, offset)
+                    if (offset <= lookup.editor.document.textLength) {
+                        lastReminiscence = Reminiscence(lookup.editor, offset)
+                    }
                 }
             }
         }