diff --git a/site/docs/hardware/ga-g41m-es2l.md b/site/docs/hardware/ga-g41m-es2l.md
index c45afb7..3cf3e7e 100644
--- a/site/docs/hardware/ga-g41m-es2l.md
+++ b/site/docs/hardware/ga-g41m-es2l.md
@@ -79,7 +79,7 @@ image is named `libreboot.rom` for your board. You can find cbfstool
 under `cbutils/` after running the following command
 in the build system:
 
-	./update trees -b coreboot utils
+	./update trees -d coreboot TREENAME
 
 You can learn more about using the build system, lbmk, here:\
 [libreboot build instructions](../build/)
diff --git a/site/docs/install/ivy_has_common.md b/site/docs/install/ivy_has_common.md
index 7564261..0bff56e 100644
--- a/site/docs/install/ivy_has_common.md
+++ b/site/docs/install/ivy_has_common.md
@@ -110,7 +110,7 @@ You *must* ensure that the files were inserted.
 
 Some examples of how to do that in lbmk:
 
-	./update trees -b coreboot utils
+	./update trees -d coreboot TREENAME
 
 Now you find `cbutitls/default`, which is a directory containing `cbfstool`
 and `ifdtool`. Do this on your ROM image (`libreboot.rom` in the example
diff --git a/site/docs/install/ivy_has_common.uk.md b/site/docs/install/ivy_has_common.uk.md
index 03f54c9..d001dee 100644
--- a/site/docs/install/ivy_has_common.uk.md
+++ b/site/docs/install/ivy_has_common.uk.md
@@ -114,7 +114,7 @@ You *must* ensure that the files were inserted.
 
 Some examples of how to do that in lbmk:
 
-	./update trees -b coreboot utils
+	./update trees -d coreboot TREENAME
 
 Now you find `cbutitls/default`, which is a directory containing `cbfstool`
 and `ifdtool`. Do this on your ROM image (`libreboot.rom` in the example
diff --git a/site/docs/linux/grub_hardening.md b/site/docs/linux/grub_hardening.md
index 50caf76..cdae75b 100644
--- a/site/docs/linux/grub_hardening.md
+++ b/site/docs/linux/grub_hardening.md
@@ -83,7 +83,7 @@ image:
 
 You can build `cbfstool` in the libreboot build system. Run this command:
 
-	./update trees -b coreboot utils
+	./update trees -d coreboot TREENAME
 
 This assumes that you already downloaded coreboot:
 
diff --git a/site/docs/maintain/index.md b/site/docs/maintain/index.md
index 3938342..23e421e 100644
--- a/site/docs/maintain/index.md
+++ b/site/docs/maintain/index.md
@@ -1326,12 +1326,12 @@ Basic command: `./update trees FLAG projectname`
 Special operation: for building coreboot utilities `cbfstool` and `ifdtool` to
 go under `cbutils/`, do this:
 
-	./update trees -b coreboot utils
+	./update trees -d coreboot TREENAME
 
 Or define specific coreboot tree such as:
 
-	./update trees -b coreboot utils default
-	./update trees -b coreboot utils cros
+	./update trees -d coreboot default
+	./update trees -d coreboot cros
 
 FLAG values are (only *one* to be used at a time):
 
@@ -1365,8 +1365,8 @@ Example commands:
 	./update trees -u seabios
 	./update trees -m u-boot gru_bob
 	./update trees -f coreboot
-	./update trees -b coreboot utils default
-	./update trees -b coreboot utils
+	./update trees -d coreboot default
+	./update trees -d coreboot
 
 NOTE: the `-x` and `-c` options will cause an exit with zero status, when
 the target's corresponding source tree is unavailable; a non-zero status is