diff --git a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/CompletionUtils.kt b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/CompletionUtils.kt
index 09b9492a239..26a4d16acf5 100644
--- a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/CompletionUtils.kt
+++ b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/CompletionUtils.kt
@@ -412,6 +412,7 @@ fun ImportableFqNameClassifier.isImportableDescriptorImported(descriptor: Declar
 
 fun OffsetMap.tryGetOffset(key: OffsetKey): Int? {
     try {
+        if (!containsOffset(key)) return null
         return getOffset(key).takeIf { it != -1 } // prior to IDEA 2016.3 getOffset() returned -1 if not found, now it throws exception
     }
     catch(e: Exception) {