diff --git a/ox/api.py b/ox/api.py
index 3e43493..6488a2a 100644
--- a/ox/api.py
+++ b/ox/api.py
@@ -167,22 +167,22 @@ class API(object):
                 try:
                     data = self._json_request(uploadUrl, meta, files=files)
                 except KeyboardInterrupt:
-                    if not slient:
+                    if not silent:
                         print("\ninterrupted by user.")
                     sys.exit(1)
                 except:
-                    if not slient:
+                    if not silent:
                         print("uploading chunk failed, will try again in 5 seconds\r", end='')
                     sys.stdout.flush()
                     data = {'result': -1}
                     time.sleep(5)
                 if data and 'status' in data:
                     if data['status']['code'] == 403:
-                        if not slient:
+                        if not silent:
                             print("login required")
                         return False
                     if data['status']['code'] != 200:
-                        if not slient:
+                        if not silent:
                             print("request returned error, will try again in 5 seconds")
                         if self.DEBUG:
                             print(data)
@@ -190,7 +190,7 @@ class API(object):
                 if data and data.get('result') == 1:
                     done += len(chunk)
                     if data.get('offset') not in (None, done):
-                        if not slient:
+                        if not silent:
                             print('server offset out of sync, continue from', data['offset'])
                         done = data['offset']
                         f.seek(done)