diff --git a/tests/utils.py b/tests/utils.py
index ea85d320..8e8c07bd 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -299,7 +299,7 @@ def flush_log(self):
         break
 
     if len(self.__logged_messages) > 0:
-      title = "Test server (" + self.server + ") output:"
+      title = "Test server (" + self.server + ") output:\n"
       message = [title] + self.__logged_messages
       self.__logger.info('| '.join(message))
       self.__logged_messages = []
diff --git a/tuf/client/updater.py b/tuf/client/updater.py
index fe563cec..d9ffb1f0 100755
--- a/tuf/client/updater.py
+++ b/tuf/client/updater.py
@@ -1320,10 +1320,12 @@ def _get_target_file(self, target_filepath, file_length, file_hashes,
         return file_object
 
       except Exception as exception:
-        # Remember the error from this mirror, and "reset" the target file.
+        # Remember the error from this mirror, close tempfile if one was opened
         logger.debug('Update failed from ' + file_mirror + '.')
         file_mirror_errors[file_mirror] = exception
-        file_object = None
+        if file_object is not None:
+          file_object.close()
+          file_object = None
 
     logger.debug('Failed to update ' + repr(target_filepath) + ' from'
         ' all mirrors: ' + repr(file_mirror_errors))