diff --git a/image_to_vm.sh b/image_to_vm.sh
index 86c228feb8..3957b626ff 100755
--- a/image_to_vm.sh
+++ b/image_to_vm.sh
@@ -29,8 +29,6 @@ DEFINE_string adjust_part "" \
   "Adjustments to apply to the partition table"
 DEFINE_string board "${DEFAULT_BOARD}" \
   "Board for which the image was built"
-DEFINE_boolean prod $FLAGS_FALSE \
-    "Build prod image"
 
 # We default to TRUE so the buildbot gets its image. Note this is different
 # behavior from image_to_usb.sh