diff --git a/firmware/Makefile b/firmware/Makefile
index 2dd0e5b..314563b 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -241,7 +241,7 @@ etags: $(TAGFILES)
 #
 .PHONY: emacs
 emacs:
-	@emacs23 $(TAGFILES) Makefile config.mk README.md
+	@emacs $(TAGFILES) Makefile config.mk README.md
 
 # Test
 #