diff --git a/src/ops/JourneyOps.ts b/src/ops/JourneyOps.ts
index 8c602ea6..dde52bbd 100644
--- a/src/ops/JourneyOps.ts
+++ b/src/ops/JourneyOps.ts
@@ -537,6 +537,10 @@ export interface TreeExportOptions {
    * Include x and y coordinate positions of the journey/tree nodes.
    */
   coords: boolean;
+  /**
+   * Save x and y coordinate positions of the journey/tree nodes separately.
+   */
+  sepCoords?: boolean;
 }
 
 /**