diff --git a/plugins/CuraEngineBackend/CuraEngineBackend.py b/plugins/CuraEngineBackend/CuraEngineBackend.py
index 7f7b992404..38c2576704 100644
--- a/plugins/CuraEngineBackend/CuraEngineBackend.py
+++ b/plugins/CuraEngineBackend/CuraEngineBackend.py
@@ -163,6 +163,7 @@ class CuraEngineBackend(Backend):
                 self._process = None
             except: # terminating a process that is already terminating causes an exception, silently ignore this.
                 pass
+            Logger.log("d", "Engine process is killed")
 
     def _onStartSliceCompleted(self, job):
         if job.getError() or job.getResult() != True:
diff --git a/plugins/CuraEngineBackend/StartSliceJob.py b/plugins/CuraEngineBackend/StartSliceJob.py
index 7c35bca36b..c1d7932302 100644
--- a/plugins/CuraEngineBackend/StartSliceJob.py
+++ b/plugins/CuraEngineBackend/StartSliceJob.py
@@ -105,7 +105,7 @@ class StartSliceJob(Job):
 
         Logger.log("d", "Sending data to engine for slicing.")
         self._socket.sendMessage(slice_message)
-
+        Logger.log("d", "Sending data to engine is completed")
         self.setResult(True)
 
     def _expandGcodeTokens(self, key, value, settings):