diff --git a/plugins/CuraEngineBackend/StartSliceJob.py b/plugins/CuraEngineBackend/StartSliceJob.py
index 7cfccb2b1f..3c1998094c 100644
--- a/plugins/CuraEngineBackend/StartSliceJob.py
+++ b/plugins/CuraEngineBackend/StartSliceJob.py
@@ -131,19 +131,19 @@ class StartSliceJob(Job):
                     Logger.log("w", "No objects suitable for one at a time found, or no correct order found")
             else:
                 temp_list = []
-                is_non_printing_mesh = False
+                has_printing_mesh = False
                 for node in DepthFirstIterator(self._scene.getRoot()):
                     if type(node) is SceneNode and node.getMeshData() and node.getMeshData().getVertices() is not None:
                         _non_printing_mesh = getattr(node, "_non_printing_mesh", False)
                         if not getattr(node, "_outside_buildarea", False) or _non_printing_mesh:
                             temp_list.append(node)
-                            if _non_printing_mesh:
-                                is_non_printing_mesh = True
+                            if not _non_printing_mesh:
+                                has_printing_mesh = True
                     Job.yieldThread()
 
-                #If list has one node and it has non printing settings then remove it from list
+                #If the list doesn't have any model with suitable settings then clean the list
                 # otherwise CuraEngine will crash
-                if len(temp_list) == 1 and is_non_printing_mesh:
+                if not has_printing_mesh:
                     temp_list.clear()
 
                 if temp_list:
diff --git a/plugins/XmlMaterialProfile/XmlMaterialProfile.py b/plugins/XmlMaterialProfile/XmlMaterialProfile.py
index e212ab9b7c..c31a60c778 100644
--- a/plugins/XmlMaterialProfile/XmlMaterialProfile.py
+++ b/plugins/XmlMaterialProfile/XmlMaterialProfile.py
@@ -737,7 +737,7 @@ class XmlMaterialProfile(InstanceContainer):
                         Logger.log("w", "No definition found for machine ID %s", machine_id)
                         continue
 
-                    Logger.log("d", "========= Found def for machine [%s]", machine_id)
+                    Logger.log("d", "Found def for machine [%s]", machine_id)
                     definition_metadata = definition_metadata[0]
 
                     machine_manufacturer = identifier.get("manufacturer", definition_metadata.get("manufacturer", "Unknown")) #If the XML material doesn't specify a manufacturer, use the one in the actual printer definition.