fix typo
diff --git a/setup.py b/setup.py
index 780889f..052fff8 100644
--- a/setup.py
+++ b/setup.py
@@ -769,7 +769,7 @@
if host_platform == 'darwin' and os_release < 9:
# In every directory on the search path search for a dynamic
# library and then a static library, instead of first looking
- # for dynamic libraries on the entiry path.
+ # for dynamic libraries on the entire path.
# This way a staticly linked custom readline gets picked up
# before the (possibly broken) dynamic library in /usr/lib.
readline_extra_link_args = ('-Wl,-search_paths_first',)