diff --git a/README.md b/README.md
index 15d2f36..81cdeb6 100644
--- a/README.md
+++ b/README.md
@@ -1053,7 +1053,7 @@ value = args.<name>
 
 Open
 ----
-**Opens file and returns a corresponding file object.**
+**Opens a file and returns a corresponding file object.**
 
 ```python
 <file> = open('<path>', mode='r', encoding=None)