diff --git a/packages/wakatime/api.py b/packages/wakatime/api.py
index 79701ed..dc56f42 100644
--- a/packages/wakatime/api.py
+++ b/packages/wakatime/api.py
@@ -40,7 +40,7 @@ except ImportError:  # pragma: nocover
 
 def _make_url(configs, path):
     base_url = configs.get('settings', 'base_url') or 'https://api.wakatime.com'
-    return '%s/%s' % (base_url, path)
+    return '%s%s' % (base_url, path)
 
 
 def send_heartbeats(heartbeats, args, configs, use_ntlm_proxy=False):