diff --git a/cube-scrambler.el b/cube-scrambler.el
index 1227d22..c67267b 100644
--- a/cube-scrambler.el
+++ b/cube-scrambler.el
@@ -26,14 +26,14 @@
 (defvar cube-faces "UDLRFB")
 
 (defun cube-scramble (moves)
-  "Generates a list of random scramnles for a 3x3 Rubik's cube and displays it.
+  "Generate a list of random moves for a 3x3 Rubik's cube and display it
 
 MOVES represents the number of moves in the list."
   (interactive "p")
   (message (mapconcat 'identity (cube-build-scramble moves) " ")))
 
 (defun cube-build-scramble (moves)
-  "Generates a list of random moves for a 3x3 Rubik's cube
+  "Generate a list of random moves for a 3x3 Rubik's cube
 
 MOVES os the number of moves to generate.  The algorithm will not
 generate a sequence that moves the same face twice in a row."
@@ -45,14 +45,14 @@ generate a sequence that moves the same face twice in a row."
     result))
 
 (defun cube-random-face (&optional last-face)
-  "Generates a random cube face
+  "Generate a random cube face
 
 If supplied, LAST-FACE will be excluded as a possibility."
   (let ((faces (cube-filter cube-faces last-face)))
     (elt faces (random (length faces)))))
 
 (defun cube-random-turn (face)
-  "Generates a random turn directio  for a given face
+  "Generate a random turn direction for a given face
 
 FACE is a character representing the face to be turned."
   (let ((suffix (pcase (random 3)
@@ -61,8 +61,8 @@ FACE is a character representing the face to be turned."
                   (2 "2"))))
     (format "%c%s" face suffix)))
 
-(defun cube-filter (str char)
-  "Filters all instances of a character from a string"
-  (seq-filter (lambda (c) (not (equal c char))) str))
+(defun cube-filter (sequence value)
+  "Filter all instances of a value from a sequence"
+  (seq-filter (lambda (c) (not (equal c value))) sequence))
 
 ;;; cube-scrambler.el ends here