diff --git a/core/SConscript.prodtest b/core/SConscript.prodtest
index 64fccf4a6..8940b083f 100644
--- a/core/SConscript.prodtest
+++ b/core/SConscript.prodtest
@@ -192,7 +192,7 @@ obj_program.extend(env.Object(source=SOURCE_PRODTEST))
 obj_program.extend(env.Object(source=SOURCE_STMHAL))
 obj_program.extend(env.Object(source=SOURCE_TREZORHAL))
 
-VENDORHEADER = 'embed/vendorheader/vendorheader_' + ('unsafe_signed_prod.bin' if ARGUMENTS.get('PRODUCTION', '0') == '0' else 'satoshilabs_signed_prod.bin')
+VENDORHEADER = 'embed/vendorheader/vendorheader_' + ('unsafe_signed_prod.bin' if ARGUMENTS.get('PRODUCTION', '0') == '0' else 'prodtest_unsigned.bin')
 
 obj_program.extend(
     env.Command(