diff --git a/sheets/chmod b/sheets/chmod
index 72a622b..85d6dad 100644
--- a/sheets/chmod
+++ b/sheets/chmod
@@ -2,28 +2,33 @@
 # Change file mode bits
 
 # Give the [u]ser who owns a file the right to e[x]ecute it.
-chmod u+x file
+chmod u+x PATH
 
 # Give the [u]ser rights to [r]ead and [w]rite to a file/directory.
-chmod u+rw file_or_directory
+chmod u+rw PATH
 
 # Remove e[x]ecutable rights from the [g]roup.
-chmod g-x file
+chmod g-x PATH
 
 # Give [a]ll users rights to [r]ead and e[x]ecute.
-chmod a+rx file
+chmod a+rx PATH
 
 # Give [o]thers (not in the file owner's group) the same rights as the [g]roup.
-chmod o=g file
+chmod o=g PATH
 
 # Remove all rights from [o]thers.
-chmod o= file
+chmod o= PATH
 
 # Change permissions recursively, allowing [g]roup and [o]thers to [w]rite.
-chmod -R g+w,o+w directory
+chmod -R g+w,o+w PATH
 
 # Set access rights using numeric (octal) form.
-chmod 750 file
+chmod 750 PATH
+
+# Add the execute permission bit to directories only. This works because the
+# 'X' is uppercase, meaning only directories will be executable. However, if
+# an existing file is executable, this bit will not be removed.
+chmod a+X PATH
 
 # Convert string representation of the access right into numeric form and back.
 curl cheat.sh/chmod/750