diff --git a/envsetup.sh b/envsetup.sh
index 65a536e7d..62802df6d 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -15,6 +15,7 @@ Invoke ". build/envsetup.sh" from your shell to add the following functions to y
 - jgrep:   Greps on all local Java files.
 - resgrep: Greps on all local res/*.xml files.
 - mangrep: Greps on all local AndroidManifest.xml files.
+- mgrep:   Greps on all local Makefiles files.
 - sepgrep: Greps on all local sepolicy files.
 - sgrep:   Greps on all local source files.
 - godir:   Go to the directory containing a file.