diff --git a/plugin/packages/wakatime/wakatime.py b/plugin/packages/wakatime/wakatime.py
index 9a3d110..b416d5a 100644
--- a/plugin/packages/wakatime/wakatime.py
+++ b/plugin/packages/wakatime/wakatime.py
@@ -134,7 +134,7 @@ def send_action(project=None, tags=None, key=None, targetFile=None,
     if endtime:
         data['endtime'] = endtime
     if isWrite:
-        data['isWrite'] = isWrite
+        data['is_write'] = isWrite
     if project:
         data['project'] = project
     if tags: