diff --git a/dios/dios.py b/dios/dios.py
index 4665aec1bccbbb2612dd95f9098d41764d9cb934..86cd0f1a77636d3c7357add6e3bbc72f2b661285 100644
--- a/dios/dios.py
+++ b/dios/dios.py
@@ -778,6 +778,13 @@ class DictOfSeries(_DiosBase):
         """ Alias, see ``notna()``. """
         return self.notna(drop_empty=drop_empty)
 
+    def to_dios(self):
+        """
+        A dummy to allow unconditional to_dios calls
+        on pd.DataFrame, pd.Series and dios.DictOfSeries
+        """
+        return self
+
     # ----------------------------------------------------------------------
     # Rendering Methods