diff --git a/Makefile b/Makefile
index 9df88d5bd..5e65be73a 100644
--- a/Makefile
+++ b/Makefile
@@ -128,7 +128,7 @@ help:
 	@echo '  oldconfig		- resolve any unresolved symbols in .config'
 	@echo
 	@echo 'Installation:'
-	@echo '  install		- install busybox into $prefix'
+	@echo '  install		- install busybox into $(PREFIX)'
 	@echo '  uninstall'
 	@echo
 	@echo 'Development:'