diff --git a/src/doxy2swig.py b/src/doxy2swig.py
index 440b5a2c..b5376719 100755
--- a/src/doxy2swig.py
+++ b/src/doxy2swig.py
@@ -385,7 +385,7 @@ class Doxy2SWIG:
     def write(self, fname):
         o = my_open_write(fname)
         if self.multi:
-            o.write("".join(self.pieces))
+            o.write("".join(x.encode('utf-8') for x in self.pieces))
         else:
             o.write("".join(self.clean_pieces(self.pieces)))
         o.close()