1 files changed, 7 insertions, 1 deletions
diff --git a/xs/src/libslic3r/PrintObject.cpp b/xs/src/libslic3r/PrintObject.cpp
index ba0876a85..7ac165864 100644
--- a/xs/src/libslic3r/PrintObject.cpp
+++ b/xs/src/libslic3r/PrintObject.cpp
@@ -93,6 +93,7 @@ bool PrintObject::set_copies(const Points &points)
     
     bool invalidated = this->_print->invalidate_step(psSkirt);
     invalidated |= this->_print->invalidate_step(psBrim);
+    invalidated |= this->_print->invalidate_step(psWipeTower);
     return invalidated;
 }
 
@@ -232,7 +233,10 @@ bool PrintObject::invalidate_state_by_config_options(const std::vector<t_config_
             || opt_key == "perimeter_speed"
             || opt_key == "small_perimeter_speed"
             || opt_key == "solid_infill_speed"
-            || opt_key == "top_solid_infill_speed") {
+            || opt_key == "top_solid_infill_speed"
+            || opt_key == "wipe_into_infill"    // when these these two are changed, we only need to invalidate the wipe tower,
+            || opt_key == "wipe_into_objects"   // which we already did at the very beginning - nothing more to be done
+            ) {
             // these options only affect G-code export, so nothing to invalidate
         } else {
             // for legacy, if we can't handle this option let's invalidate all steps
@@ -272,6 +276,8 @@ bool PrintObject::invalidate_step(PrintObjectStep step)
     }
 
     // Wipe tower depends on the ordering of extruders, which in turn depends on everything.
+    // It also decides about what the wipe_into_infill / wipe_into_object features will do,
+    // and that too depends on many of the settings.
     invalidated |= this->_print->invalidate_step(psWipeTower);
     return invalidated;
 }