1 files changed, 4 insertions, 2 deletions
diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts
index 6a7047725..2ee36d2ec 100644
--- a/src/client/util/DragManager.ts
+++ b/src/client/util/DragManager.ts
@@ -140,11 +140,13 @@ export namespace DragManager {
         constructor(dragDoc: Document[]) {
             this.draggedDocuments = dragDoc;
             this.droppedDocuments = dragDoc;
+            this.xOffset = 0;
+            this.yOffset = 0;
         }
         draggedDocuments: Document[];
         droppedDocuments: Document[];
-        xOffset?: number;
-        yOffset?: number;
+        xOffset: number;
+        yOffset: number;
         aliasOnDrop?: boolean;
         copyOnDrop?: boolean;
         moveDocument?: MoveFunction;