diff --git a/src/lib/isMigrationValue.ts b/src/lib/isMigrationValue.ts
index 72613978..a0628db8 100644
--- a/src/lib/isMigrationValue.ts
+++ b/src/lib/isMigrationValue.ts
@@ -85,6 +85,10 @@ export const image = (value: UnknownValue): value is MigrationImage => {
 /**
  * Checks if a value is a migration link to media field.
  *
+ * @remarks
+ * `OptionalLinkProperties` is included because `MigrationContentRelationship`
+ * may be a link field, not strictly a content relationship field.
+ *
  * @param value - Value to check.
  *
  * @returns `true` if `value` is a migration link to media field, `false`
@@ -95,7 +99,7 @@ export const image = (value: UnknownValue): value is MigrationImage => {
  */
 export const linkToMedia = (
 	value: UnknownValue,
-): value is MigrationLinkToMedia => {
+): value is MigrationLinkToMedia & OptionalLinkProperties => {
 	return (
 		typeof value === "object" &&
 		value !== null &&