diff --git a/Makefile b/Makefile
index 698dfc6ba65c5ba95f969b17f405e5d71d6cbd33..6847464402aaa238ef3e7bf5d22908f8d9cd7bf8 100644
--- a/Makefile
+++ b/Makefile
@@ -1181,6 +1181,7 @@ help:
 	@echo  '  dir/            - Build all files in dir and below'
 	@echo  '  dir/file.[ois]  - Build specified target only'
 	@echo  '  dir/file.ko     - Build module including final link'
+	@echo  '  prepare         - Set up for building external modules'
 	@echo  '  tags/TAGS	  - Generate tags file for editors'
 	@echo  '  cscope	  - Generate cscope index'
 	@echo  '  kernelrelease	  - Output the release version string'