diff --git a/gramps/plugins/export/exportpkg.py b/gramps/plugins/export/exportpkg.py
index 26bed467e..7acc5c5a9 100644
--- a/gramps/plugins/export/exportpkg.py
+++ b/gramps/plugins/export/exportpkg.py
@@ -39,7 +39,7 @@ import tarfile
 if sys.version_info[0] < 3:
     from cStringIO import StringIO
 else:
-    from io import StringIO
+    import io
 from gramps.gen.ggettext import gettext as _
 
 #------------------------------------------------------------------------
@@ -63,7 +63,7 @@ from gi.repository import Gtk
 #
 #-------------------------------------------------------------------------
 from gramps.gui.plug.export import WriterOptionBox
-from exportxml import XmlWriter
+from .exportxml import XmlWriter
 from gramps.gen.utils.file import media_path_full, get_unicode_path_from_file_chooser
 from gramps.gen.constfunc import win
 
@@ -214,7 +214,10 @@ class PackageWriter(object):
 #                     select_clicked()
         
         # Write XML now
-        g = StringIO()
+        if sys.version_info[0] < 3:
+            g = StringIO()
+        else:
+            g = io.BytesIO()
         gfile = XmlWriter(self.db, self.user, 2)
         gfile.write_handle(g)
         tarinfo = tarfile.TarInfo('data.gramps')
diff --git a/gramps/plugins/export/exportxml.py b/gramps/plugins/export/exportxml.py
index 424e37f9c..16d775775 100644
--- a/gramps/plugins/export/exportxml.py
+++ b/gramps/plugins/export/exportxml.py
@@ -121,7 +121,7 @@ class GrampsXmlWriter(UpdateCallback):
 
         self.status = None
 
-    def write(self,filename):
+    def write(self, filename):
         """
         Write the database to the specified file.
         """
@@ -180,7 +180,7 @@ class GrampsXmlWriter(UpdateCallback):
 
         if self.compress and _gzip_ok:
             try:
-                g = gzip.GzipFile(mode="wb",fileobj=handle)
+                g = gzip.GzipFile(mode="wb", fileobj=handle)
             except:
                 g = handle
         else: