diff --git a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelService.kt b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelService.kt
index 148bcb300e9..cbdb9058098 100644
--- a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelService.kt
+++ b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelService.kt
@@ -35,7 +35,7 @@ class LookupCancelService {
         // forget about auto-popup cancellation when the caret is moved to the start or before it
         private var editorListener: CaretListener? = object : CaretListener {
             override fun caretPositionChanged(e: CaretEvent) {
-                if (!marker!!.isValid || editor.logicalPositionToOffset(e.newPosition) <= offset) {
+                if (marker != null && (!marker!!.isValid || editor.logicalPositionToOffset(e.newPosition) <= offset)) {
                     dispose()
                 }
             }
diff --git a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt.192 b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt.192
index 6a3f3a44076..46318e0e9c5 100644
--- a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt.192
+++ b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt.192
@@ -45,7 +45,7 @@ class LookupCancelWatcher(val project: Project) : ProjectComponent {
         // forget about auto-popup cancellation when the caret is moved to the start or before it
         private var editorListener: CaretListener? = object : CaretListener {
             override fun caretPositionChanged(e: CaretEvent) {
-                if (!marker!!.isValid || editor.logicalPositionToOffset(e.newPosition) <= offset) {
+                if (marker != null && (!marker!!.isValid || editor.logicalPositionToOffset(e.newPosition) <= offset)) {
                     dispose()
                 }
             }