diff --git a/init/grab-bootchart.sh b/init/grab-bootchart.sh
index 7fe8904..5715862 100755
--- a/init/grab-bootchart.sh
+++ b/init/grab-bootchart.sh
@@ -3,6 +3,8 @@
 # this script is used to retrieve the bootchart log generated
 # by init when compiled with INIT_BOOTCHART=true.
 #
+# All options are passed to adb, for better or for worse.
+#
 # for all details, see //device/system/init/README.BOOTCHART
 #
 TMPDIR=/tmp/android-bootchart
@@ -15,8 +17,9 @@
 FILES="header proc_stat.log proc_ps.log proc_diskstats.log kernel_pacct"
 
 for f in $FILES; do
-    adb pull $LOGROOT/$f $TMPDIR/$f 2>&1 > /dev/null
+    adb "${@}" pull $LOGROOT/$f $TMPDIR/$f 2>&1 > /dev/null
 done
 (cd $TMPDIR && tar -czf $TARBALL $FILES)
-cp -f $TMPDIR/$TARBALL ./$TARBALL
-echo "look at $TARBALL"
+bootchart ${TMPDIR}/${TARBALL}
+gnome-open ${TARBALL%.tgz}.png
+echo "Clean up ${TMPDIR}/ & ./${TARBALL%.tgz}.png when done"
diff --git a/init/readme.txt b/init/readme.txt
index 32eb4ab..9c24220 100644
--- a/init/readme.txt
+++ b/init/readme.txt
@@ -313,9 +313,8 @@
 bootchart command-line utility:
 
   sudo apt-get install pybootchartgui
+  ANDROID_SERIAL=<device serial number>
   $ANDROID_BUILD_TOP/system/core/init/grab-bootchart.sh
-  bootchart ./bootchart.tgz
-  gnome-open bootchart.png
 
 
 Debugging init