diff --git a/src/Classes/Project.gd b/src/Classes/Project.gd
index c9a80b817..0d7a988b3 100644
--- a/src/Classes/Project.gd
+++ b/src/Classes/Project.gd
@@ -65,8 +65,8 @@ func _init(_frames := [], _name := tr("untitled"), _size := Vector2(64, 64)) ->
 	OpenSave.current_save_paths.append("")
 	OpenSave.backup_save_paths.append("")
 
-	x_symmetry_point = size.x
-	y_symmetry_point = size.y
+	x_symmetry_point = size.x - 1
+	y_symmetry_point = size.y - 1
 
 	x_symmetry_axis.type = x_symmetry_axis.Types.HORIZONTAL
 	x_symmetry_axis.project = self