diff --git a/lenovo/t420/4.4-dirty/2016-05-17T17_43_15Z/rom_checksum.txt b/lenovo/t420/4.4-dirty/2016-05-17T17_43_15Z/rom_checksum.txt
new file mode 100644
index 0000000..dc8b398
--- /dev/null
+++ b/lenovo/t420/4.4-dirty/2016-05-17T17_43_15Z/rom_checksum.txt
@@ -0,0 +1 @@
+d2926854d4fd69f6397db91d5a82d6b0 *build/coreboot.rom