1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/progmodes/make-mode.el b/lisp/progmodes/make-mode.el
index f535012e043..47798469439 100644
--- a/lisp/progmodes/make-mode.el
+++ b/lisp/progmodes/make-mode.el
@@ -214,7 +214,7 @@ not be enclosed in { } or ( ).")
    (list makefile-macroassign-regex 1 'font-lock-variable-name-face)
    ;;
    ;; Variable references even in targets/strings/comments:
-   '("\\$[({]\\([a-zA-Z0-9_]+\\)[}):]" 1 font-lock-reference-face prepend)
+   '("\\$[({]\\([-a-zA-Z0-9_.]+\\)[}):]" 1 font-lock-reference-face prepend)
    ;;
    ;; Do dependencies.  These get the function name face.
    (list makefile-dependency-regex 1 'font-lock-function-name-face 'prepend)