#5486: typos.
diff --git a/Doc/library/tokenize.rst b/Doc/library/tokenize.rst
index 197b574..acb0b78 100644
--- a/Doc/library/tokenize.rst
+++ b/Doc/library/tokenize.rst
@@ -82,7 +82,7 @@
 .. function:: detect_encoding(readline)
 
     The :func:`detect_encoding` function is used to detect the encoding that
-    should be used to decode a Python source file. It requires one argment,
+    should be used to decode a Python source file. It requires one argument,
     readline, in the same way as the :func:`tokenize` generator.
 
     It will call readline a maximum of twice, and return the encoding used