diff --git a/pixel/README.md b/pixel/README.md
index a43f31c..18776c3 100644
--- a/pixel/README.md
+++ b/pixel/README.md
@@ -10,8 +10,8 @@ Standard Variables:
 
 * `firmware_partitions` - A matrix of the partition names of proprietary firmware images relevant to this device
 * `device_repos` - A matrix of the file-paths of relevant AOSP repositories this device depends on.
-* `{prev_,}build_id` - Previous/current device stock build ID tags
-* `{prev_,}build_number` - Previous/current device stock build number strings
+* `build_id` - Previous/current device stock build ID tags
+* `build_number` - Previous/current device stock build number strings
 * `image_url` - Direct link to device's latest factory image
 * `image_sha256` - SHA256 sum of device's latest factory image
 * `flash_url` - Stores a formatted link to Google's web-based [Flash tool](https://flash.android.com/welcome) which brings up the device's latest available image, additionally is used to fetch the data used to create build fingerprint changes
diff --git a/pixel/update-device-vars.sh b/pixel/update-device-vars.sh
index 283979a..9024353 100755
--- a/pixel/update-device-vars.sh
+++ b/pixel/update-device-vars.sh
@@ -73,7 +73,6 @@ main() {
         sed -i "/ prev_aosp_tag=/c\readonly prev_aosp_tag=\"$aosp_tag\"" "${dv}"
         sed -i "/ aosp_tag=/c\readonly aosp_tag=\"$new_aosp_tag\"" "${dv}"
       fi
-      sed -i "/ prev_build_number=/c\readonly prev_build_number=\"$build_number\"" "${dv}"
       sed -i "/ build_number=/c\readonly build_number=\"$new_build_number\"" "${dv}"
       sed -i "/ image_url=/c\readonly image_url=\"$new_image_url\"" "${dv}"
       sed -i "/ image_sha256=/c\readonly image_sha256=\"$new_image_sha256\"" "${dv}"