diff --git a/src/libslic3r/Print.hpp b/src/libslic3r/Print.hpp
index 7e5e5fecdf..3d555bdbce 100644
--- a/src/libslic3r/Print.hpp
+++ b/src/libslic3r/Print.hpp
@@ -474,7 +474,9 @@ struct WipeTowerData
         used_filament.clear();
         number_of_toolchanges = -1;
         depth = 0.f;
+        z_and_depth_pairs.clear();
         brim_width = 0.f;
+        height = 0.f;
         width = 0.f;
         first_layer_height = 0.f;
         cone_angle = 0.f;