diff --git a/android/makevars.go b/android/makevars.go
index b6bc14e..f57ac45 100644
--- a/android/makevars.go
+++ b/android/makevars.go
@@ -507,7 +507,7 @@
 		if extraFiles := install.extraFiles; extraFiles != nil {
 			fmt.Fprintf(buf, "\t( unzip -qDD -d '%s' '%s' 2>&1 | grep -v \"zipfile is empty\"; exit $${PIPESTATUS[0]} ) || \\\n", extraFiles.dir.String(), extraFiles.zip.String())
 			fmt.Fprintf(buf, "\t  ( code=$$?; if [ $$code -ne 0 -a $$code -ne 1 ]; then exit $$code; fi )\n")
-			fmt.Fprintf(buf, "EXTRA_INSTALL_ZIPS += %s:%s\n", extraFiles.dir.String(), extraFiles.zip.String())
+			fmt.Fprintf(buf, "EXTRA_INSTALL_ZIPS += %s:%s:%s\n", install.to.String(), extraFiles.dir.String(), extraFiles.zip.String())
 		}
 
 		fmt.Fprintln(buf)
diff --git a/scripts/extra_install_zips_file_list.py b/scripts/extra_install_zips_file_list.py
index 8ea2a4b..148d6cc 100755
--- a/scripts/extra_install_zips_file_list.py
+++ b/scripts/extra_install_zips_file_list.py
@@ -18,13 +18,16 @@
     parser.add_argument('staging_dir',
         help='Path to the partition staging directory')
     parser.add_argument('extra_install_zips', nargs='*',
-        help='The value of EXTRA_INSTALL_ZIPS from make. It should be a list of extraction_dir:zip_file pairs.')
+        help='The value of EXTRA_INSTALL_ZIPS from make. '
+        'It should be a list of primary_file:extraction_dir:zip_file trios. '
+        'The primary file will be ignored by this script, you should ensure that '
+        'the list of trios given to this script is already filtered by relevant primary files.')
     args = parser.parse_args()
 
     staging_dir = args.staging_dir.removesuffix('/') + '/'
 
-    for zip_pair in args.extra_install_zips:
-        d, z = zip_pair.split(':')
+    for zip_trio in args.extra_install_zips:
+        _, d, z = zip_trio.split(':')
         d = d.removesuffix('/') + '/'
 
         if d.startswith(staging_dir):