diff --git a/qurator/modstool/lib.py b/qurator/modstool/lib.py
index 4d00510..9a158e1 100644
--- a/qurator/modstool/lib.py
+++ b/qurator/modstool/lib.py
@@ -55,7 +55,8 @@ class TagGroup:
         for e in self.group:
             if t != '':
                 t += separator
-            t += e.text
+            if e.text:
+                t += e.text
         return t
 
     def text_set(self):