diff --git a/src/components/modal/modal.vue b/src/components/modal/modal.vue
index 07eb0a8..3c62366 100644
--- a/src/components/modal/modal.vue
+++ b/src/components/modal/modal.vue
@@ -280,8 +280,8 @@
 
                 const $content = this.$refs.content;
                 const rect = $content.getBoundingClientRect();
-                this.dragData.x = rect.x;
-                this.dragData.y = rect.y;
+                this.dragData.x = rect.x || rect.left;
+                this.dragData.y = rect.y || rect.top;
 
                 const distance = {
                     x: event.clientX,
--
libgit2 0.21.4