fix typo
diff --git a/setup.py b/setup.py
index 6d9f91b..6af41c2 100644
--- a/setup.py
+++ b/setup.py
@@ -503,7 +503,7 @@
if sys.platform == 'darwin':
# 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 (broken) dynamic library in /usr/lib.
readline_extra_link_args = ('-Wl,-search_paths_first',)