diff --git a/qiita_client/plugin.py b/qiita_client/plugin.py
index a674eb8..6c6cd27 100644
--- a/qiita_client/plugin.py
+++ b/qiita_client/plugin.py
@@ -240,7 +240,7 @@ def __call__(self, server_url, job_id, output_dir):
         logger.debug('Entered BaseQiitaPlugin.__call__()')
         # Set up the Qiita Client
         config = ConfigParser()
-        with open(self.conf_fp, 'U') as conf_file:
+        with open(self.conf_fp, 'r') as conf_file:
             config.readfp(conf_file)
 
         qclient = QiitaClient(server_url, config.get('oauth2', 'CLIENT_ID'),
diff --git a/qiita_client/qiita_client.py b/qiita_client/qiita_client.py
index 881cf5a..f16e1d3 100644
--- a/qiita_client/qiita_client.py
+++ b/qiita_client/qiita_client.py
@@ -57,7 +57,7 @@ def __init__(self, output_name, artifact_type, files, archive=None):
 
     def __eq__(self, other):
         logger.debug('Entered ArtifactInfo.__eq__()')
-        if type(self) != type(other):
+        if not isinstance(other, ArtifactInfo):
             return False
         if self.output_name != other.output_name or \
                 self.artifact_type != other.artifact_type or \