diff --git a/beetsplug/spotify.py b/beetsplug/spotify.py
index e51d32643..caaa06a55 100644
--- a/beetsplug/spotify.py
+++ b/beetsplug/spotify.py
@@ -68,10 +68,10 @@ class SpotifyPlugin(BeetsPlugin):
             'Authorization': 'Basic {}'.format(
                 base64.b64encode(
                     '{}:{}'.format(
-                        self.config['client_id'].as_str().encode(),
-                        self.config['client_secret'].as_str().encode(),
+                        self.config['client_id'].as_str(),
+                        self.config['client_secret'].as_str(),
                     )
-                ).decode()
+                )
             )
         }
         response = requests.post(