diff --git a/Tasks_of_the_Contingent_Librarian/reading_writing.md b/Tasks_of_the_Contingent_Librarian/reading_writing.md
index 47bc12f..92865b9 100644
--- a/Tasks_of_the_Contingent_Librarian/reading_writing.md
+++ b/Tasks_of_the_Contingent_Librarian/reading_writing.md
@@ -6,9 +6,9 @@ On the surface of it, a library is a place for reading.
 
 Unix-like systems use three permissions; 
 
-1. *executable*
-2. *read*
-3. *write*
+1. *read*
+2. *write*
+3. *execute*
 
 ## writing