diff --git a/Makefile b/Makefile
index 03a7e1e..3740ef0 100644
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,7 @@ ELFILES = \
 	purescript-mode.el \
 	purescript-move-nested.el \
 	purescript-navigate-imports.el \
+	purescript-presentation-mode.el \
 	purescript-simple-indent.el \
 	purescript-sort-imports.el \
 	purescript-str.el \
diff --git a/purescript-presentation-mode.el b/purescript-presentation-mode.el
index 1a8fa9b..8dcd86c 100644
--- a/purescript-presentation-mode.el
+++ b/purescript-presentation-mode.el
@@ -35,7 +35,7 @@
 
 (define-key purescript-presentation-mode-map (kbd "q") 'quit-window)
 
-(defun purescript-present (name session code)
+(defun purescript-present (name _ code)
   "Present CODE in a popup buffer suffixed with NAME and set
 SESSION as the current purescript-session."
   (let* ((name (format "*PureScript Presentation%s*" name))