--- derived.el	2022-03-03 11:33:56.101116071 -0500
+++ derived.el-patched	2022-03-03 11:36:39.306232391 -0500
@@ -404,7 +404,7 @@
       t
     (eval `(defvar ,(derived-mode-abbrev-table-name mode)
 	     (progn
-	       (define-abbrev-table (derived-mode-abbrev-table-name mode) nil)
+	       ,(define-abbrev-table (derived-mode-abbrev-table-name mode) nil)
 	       (make-abbrev-table))
 	     ,(format "Abbrev table for %s." mode)))))