diff --git a/plugins/CuraEngineBackend/CuraEngineBackend.py b/plugins/CuraEngineBackend/CuraEngineBackend.py
index 9e37fa9049..40729eb48b 100644
--- a/plugins/CuraEngineBackend/CuraEngineBackend.py
+++ b/plugins/CuraEngineBackend/CuraEngineBackend.py
@@ -127,13 +127,15 @@ class CuraEngineBackend(Backend):
 
     ##  Perform a slice of the scene.
     def slice(self):
+        if not self._enabled or not self._global_container_stack: #We shouldn't be slicing.
+            # try again in a short time
+            self._change_timer.start()
+            return
+
         self.printDurationMessage.emit(0, [0])
 
         self._stored_layer_data = []
 
-        if not self._enabled or not self._global_container_stack: #We shouldn't be slicing.
-            return
-
         if self._slicing: #We were already slicing. Stop the old job.
             self._terminate()