diff --git a/README.md b/README.md
index 7905c83..84b5908 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ This action slug and expose some github variables.
 
 - put the variable content in lower case,
 - replace any caracter by `-` except `0-9` and `a-z`,
-- limit the string size to 63 caracter
+- limit the string size to 63 caracters
 
 ## Environement Variables