diff --git a/packages/console/src/components/Literals/helpers.ts b/packages/console/src/components/Literals/helpers.ts
index 53a8ccb5b..4c0223315 100644
--- a/packages/console/src/components/Literals/helpers.ts
+++ b/packages/console/src/components/Literals/helpers.ts
@@ -361,7 +361,7 @@ function processCollection(
     return 'invalid collection';
   }
 
-  if (!isNaN(mapTaskIndex!)) {
+  if (mapTaskIndex !== undefined && !isNaN(mapTaskIndex)) {
     literals = (literals || []).splice(mapTaskIndex!, 1);
   }