diff --git a/pykat/components.py b/pykat/components.py
index 1d3506ccfa523d91e76f4f4b838941c6710086c5..2cbc48edc8ab9ae7a96f9b8b2c0364eaec75859e 100644
--- a/pykat/components.py
+++ b/pykat/components.py
@@ -328,7 +328,7 @@ class beamSplitter(AbstractMirrorComponent):
                 self.nodes[1].name, self.nodes[2].name,
                 self.nodes[3].name))
 
-        rtn.append(super(beamSplitter, self).getAttributeText())
+        rtn.extend(super(beamSplitter, self).getAttributeText())
         
         return rtn