diff --git a/lisp/recentf.el b/lisp/recentf.el
index d641250f017..519a6e1dfec 100644
--- a/lisp/recentf.el
+++ b/lisp/recentf.el
@@ -1355,7 +1355,7 @@ Optional argument N must be a valid digit number.  It defaults to 1.
 ;;
 (defconst recentf-save-file-header
   ;; FIXME: This should arguably be a `lisp-data' file, but currently
-  ;; it contains and is used as an executable ELisp code.
+  ;; it contains and is used as an executable Elisp code.
   ";;; Automatically generated by `recentf' on %s  -*- mode: emacs-lisp; lexical-binding: t -*-\n"
   "Header to be written into the `recentf-save-file'.")
 
diff --git a/lisp/savehist.el b/lisp/savehist.el
index e470dfa71db..234a3218a55 100644
--- a/lisp/savehist.el
+++ b/lisp/savehist.el
@@ -256,7 +256,7 @@ Be careful to do it while preserving the current history data."
   ;; We don't know the relative age of the various entries in OLD and
   ;; NEW; it's possible that most entries in NEW are much older than
   ;; those in OLD or vice versa, or anything in-between.  Maybe we should
-  ;; export the `lib/diffseq.h' to ELisp and use it here, but in the mean
+  ;; export the `lib/diffseq.h' to Elisp and use it here, but in the mean
   ;; time we interleave the two lists, which should usually be tolerable.
   (let ((res ()))
     (while (and old new)
diff --git a/src/xdisp.c b/src/xdisp.c
index 8eec2757226..909a9db1031 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -3054,7 +3054,7 @@ hscrolling_current_line_p (struct window *w)
 			Lisp form evaluation
  ***********************************************************************/
 
-/* The redisplay is not re-entrant.  But we can run ELisp code during
+/* The redisplay is not re-entrant.  But we can run Elisp code during
    redisplay, which in turn can trigger redisplay.
    We try to make this inner redisplay work correctly, but it messes up
    the state of the outer redisplay, so when we return to this outer