diff --git a/xs/src/libslic3r/Print.cpp b/xs/src/libslic3r/Print.cpp
index 267062125e..3ce73ab9a9 100644
--- a/xs/src/libslic3r/Print.cpp
+++ b/xs/src/libslic3r/Print.cpp
@@ -613,12 +613,14 @@ std::string Print::validate() const
             object->update_layer_height_profile();
             object->layer_height_profile_valid = was_layer_height_profile_valid;
 
-            PrintObject* first_object = this->objects.front();
-            int i = 0;
-            while ( i < first_object->layer_height_profile.size() && i < object->layer_height_profile.size() ) {
-                if (std::abs(first_object->layer_height_profile[i] - object->layer_height_profile[i]) > EPSILON )
-                    return "The Wipe tower is only supported if all objects have the same layer height profile";
-                ++i;
+            if ( this->config.variable_layer_height ) {
+                PrintObject* first_object = this->objects.front();
+                int i = 0;
+                while ( i < first_object->layer_height_profile.size() && i < object->layer_height_profile.size() ) {
+                    if (std::abs(first_object->layer_height_profile[i] - object->layer_height_profile[i]) > EPSILON )
+                        return "The Wipe tower is only supported if all objects have the same layer height profile";
+                    ++i;
+                }
             }
 
             /*for (size_t i = 5; i < object->layer_height_profile.size(); i += 2)