diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 472c434a0..4887eeeac 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -3090,15 +3090,14 @@ unsigned int Plater::priv::update_background_process(bool force_validation, bool
     }
 
 	//actualizate warnings
-	if (invalidated != Print::APPLY_STATUS_UNCHANGED) {
+	if (invalidated != Print::APPLY_STATUS_UNCHANGED || background_process.empty()) {
         if (background_process.empty())
             process_validation_warning(std::string());
 		actualize_slicing_warnings(*this->background_process.current_print());
         actualize_object_warnings(*this->background_process.current_print());
 		show_warning_dialog = false;
-		process_completed_with_error = false;
-        
-	}
+		process_completed_with_error = false;  
+	} 
 
     if (invalidated != Print::APPLY_STATUS_UNCHANGED && was_running && ! this->background_process.running() &&
         (return_state & UPDATE_BACKGROUND_PROCESS_RESTART) == 0) {