diff --git a/plugins/CuraEngineBackend/CuraEngineBackend.py b/plugins/CuraEngineBackend/CuraEngineBackend.py
index a2b049277f..4e530c6ce1 100644
--- a/plugins/CuraEngineBackend/CuraEngineBackend.py
+++ b/plugins/CuraEngineBackend/CuraEngineBackend.py
@@ -120,7 +120,7 @@ class CuraEngineBackend(Backend):
                     pass
             self.slicingCancelled.emit()
             return
-
+        Logger.log("d", "Preparing to send slice data to engine.")
         object_groups = []
         if self._profile.getSettingValue("print_sequence") == "one_at_a_time":
             for node in OneAtATimeIterator(self._scene.getRoot()):
@@ -214,6 +214,7 @@ class CuraEngineBackend(Backend):
             self._handlePerObjectSettings(group[0], group_message)
 
         self._scene.releaseLock()
+        Logger.log("d", "Sending data to engine for slicing.")
         self._socket.sendMessage(slice_message)
 
     def _onSceneChanged(self, source):
@@ -225,7 +226,6 @@ class CuraEngineBackend(Backend):
 
         self._onChanged()
 
-
     def _onActiveProfileChanged(self):
         if self._profile:
             self._profile.settingValueChanged.disconnect(self._onSettingChanged)