diff --git a/README.md b/README.md
index 98a04c6..f40f576 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ jobs:
 **Parameters:**
 | Parameter | Type | Description | Required |
 | :--- | :---: | :--- | :---: |
-| initial_mapping | `string` | a [Bloblang mapping](https://www.benthos.dev/docs/guides/bloblang/about) that can be used to customize the initial version returned by this resource, defaults to `id = ksuid()` | |
+| initial_mapping | `string` | a [Bloblang mapping](https://www.benthos.dev/docs/guides/bloblang/about) that can be used to customize the initial version returned by this resource, if not specified, checking is a noop and should be disabled via `check_every: never` | |
 
 ## Behavior
 
diff --git a/main.go b/main.go
index caa651e..777dcb5 100644
--- a/main.go
+++ b/main.go
@@ -59,18 +59,15 @@ type Resource struct{}
 
 // Check is a required resource method, but is a no-op for this resource
 func (r *Resource) Check(ctx context.Context, s *Source, v *Version) (versions []Version, err error) {
-	if v == nil {
-		m := "id = ksuid()"
-		if s != nil && s.InitialMapping != "" {
-			m = s.InitialMapping
-		}
-		init, _, err := r.newVersion(ctx, m)
+	if v != nil {
+		versions = append(versions, *v)
+	}
+	if len(versions) == 0 && s.InitialMapping != "" {
+		init, _, err := r.newVersion(ctx, s.InitialMapping)
 		if err != nil {
 			return nil, err
 		}
 		versions = append(versions, *init)
-	} else {
-		versions = append(versions, *v)
 	}
 	return
 }