diff --git a/core/core.el b/core/core.el
index c74f5b031..9c621f0f1 100644
--- a/core/core.el
+++ b/core/core.el
@@ -47,6 +47,7 @@ envvar will enable this at startup.")
 
 (defconst NATIVECOMP (if (fboundp 'native-comp-available-p) (native-comp-available-p)))
 (defconst EMACS28+   (> emacs-major-version 27))
+(defconst EMACS29+   (> emacs-major-version 28))
 (defconst IS-MAC     (eq system-type 'darwin))
 (defconst IS-LINUX   (eq system-type 'gnu/linux))
 (defconst IS-WINDOWS (memq system-type '(cygwin windows-nt ms-dos)))