diff --git a/TileStache/S3.py b/TileStache/S3.py
index 8402e5e8..fb55b342 100644
--- a/TileStache/S3.py
+++ b/TileStache/S3.py
@@ -63,7 +63,7 @@ def lock(self, layer, coord, format):
         """ Acquire a cache lock for this tile.
         
             Returns nothing, but blocks until the lock has been acquired.
-            Does nothing and returns immediately is `use_locks` is false.
+            Does nothing and returns immediately if `use_locks` is false.
         """
         if not self.use_locks:
             return
diff --git a/scripts/tilestache-compose.py b/scripts/tilestache-compose.py
index 1cadd400..88d64cbc 100644
--- a/scripts/tilestache-compose.py
+++ b/scripts/tilestache-compose.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 from sys import stderr, path
 from tempfile import mkstemp
 from thread import allocate_lock