diff --git a/extensions/fablabchemnitz/boundingbox.py b/extensions/fablabchemnitz/boundingbox.py
index 1ab7f124..5a831ff1 100644
--- a/extensions/fablabchemnitz/boundingbox.py
+++ b/extensions/fablabchemnitz/boundingbox.py
@@ -39,7 +39,6 @@ class DrawBBoxes(inkex.EffectExtension):
                 for id, item in self.svg.selected.items():
                     self.drawBBox(item.bounding_box())
             else:
-                inkex.utils.debug("")
                 #self.drawBBox(self.svg.get_selected_bbox()) #works for InkScape (1:1.0+devel+202008292235+eff2292935) @ Linux and for Windows (but with deprecation)
                 self.drawBBox(self.svg.selection.bounding_box()) #works for InkScape 1.1dev (9b1fc87, 2020-08-27)) @ Windows
 
diff --git a/extensions/fablabchemnitz/group_to_layer.py b/extensions/fablabchemnitz/group_to_layer.py
index 8a4ad0e1..aef1d982 100644
--- a/extensions/fablabchemnitz/group_to_layer.py
+++ b/extensions/fablabchemnitz/group_to_layer.py
@@ -32,8 +32,12 @@ class GroupToLayerEffect(inkex.EffectExtension):
     def effect(self):
         depth = self.options.depth
         self.tag_g = inkex.addNS('g', 'svg')
-        for node in self.svg.selected.values():
-            self.convert_group(node, depth)
+        if len(self.svg.selected) > 0:
+            for node in self.svg.selected.values():
+                self.convert_group(node, depth)
+        else:
+            inkex.errormsg('Please select some objects first.')
+            return
 
     def convert_group(self, node, depth):
         if depth <= 0: