diff --git a/README.md b/README.md
index 47e686f84..a4c4354e0 100644
--- a/README.md
+++ b/README.md
@@ -128,10 +128,10 @@ Alternatively, refer to the [developer instructions](#developer-instructions) fo
                                          CIDR notation
 
 ## Video Selection:
-    --playlist-start NUMBER              Playlist video to start at (default is
-                                         1)
-    --playlist-end NUMBER                Playlist video to end at (default is
-                                         last)
+    --playlist-start NUMBER              Playlist index of first item to include (default
+                                         is 1)
+    --playlist-end NUMBER                Playlist index of last item to include (default
+                                         is last)
     --playlist-items ITEM_SPEC           Playlist video items to download.
                                          Specify indices of the videos in the
                                          playlist separated by commas like: "--
diff --git a/youtube_dl/options.py b/youtube_dl/options.py
index 434f520d3..6fbb5178a 100644
--- a/youtube_dl/options.py
+++ b/youtube_dl/options.py
@@ -256,11 +256,11 @@ def parseOpts(overrideArguments=None):
     selection.add_option(
         '--playlist-start',
         dest='playliststart', metavar='NUMBER', default=1, type=int,
-        help='Playlist video to start at (default is %default)')
+        help='Playlist index of first item to include (default is %default)')
     selection.add_option(
         '--playlist-end',
         dest='playlistend', metavar='NUMBER', default=None, type=int,
-        help='Playlist video to end at (default is last)')
+        help='Playlist index of last item to include (default is last)')
     selection.add_option(
         '--playlist-items',
         dest='playlist_items', metavar='ITEM_SPEC', default=None,