diff --git a/homeassistant/components/downloader.py b/homeassistant/components/downloader.py
index 07f432a5218..5c9ced1fd89 100644
--- a/homeassistant/components/downloader.py
+++ b/homeassistant/components/downloader.py
@@ -20,6 +20,7 @@ _LOGGER = logging.getLogger(__name__)
 ATTR_FILENAME = 'filename'
 ATTR_SUBDIR = 'subdir'
 ATTR_URL = 'url'
+ATTR_OVERWRITE = 'overwrite'
 
 CONF_DOWNLOAD_DIR = 'download_dir'
 
@@ -31,6 +32,7 @@ SERVICE_DOWNLOAD_FILE_SCHEMA = vol.Schema({
     vol.Required(ATTR_URL): cv.url,
     vol.Optional(ATTR_SUBDIR): cv.string,
     vol.Optional(ATTR_FILENAME): cv.string,
+    vol.Optional(ATTR_OVERWRITE, default=False): cv.boolean,
 })
 
 CONFIG_SCHEMA = vol.Schema({
@@ -66,6 +68,8 @@ def setup(hass, config):
 
                 filename = service.data.get(ATTR_FILENAME)
 
+                overwrite = service.data.get(ATTR_OVERWRITE)
+
                 if subdir:
                     subdir = sanitize_filename(subdir)
 
@@ -109,12 +113,13 @@ def setup(hass, config):
 
                     # If file exist append a number.
                     # We test filename, filename_2..
-                    tries = 1
-                    final_path = path + ext
-                    while os.path.isfile(final_path):
-                        tries += 1
+                    if not overwrite:
+                        tries = 1
+                        final_path = path + ext
+                        while os.path.isfile(final_path):
+                            tries += 1
 
-                        final_path = "{}_{}.{}".format(path, tries, ext)
+                            final_path = "{}_{}.{}".format(path, tries, ext)
 
                     _LOGGER.info("%s -> %s", url, final_path)