diff --git a/build.sh b/build.sh
index e273bf1..c3228b7 100755
--- a/build.sh
+++ b/build.sh
@@ -3,9 +3,11 @@ set -euo pipefail
 
 readonly ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 cd "$ROOT"
+readonly BUILD="$ROOT/build-twrp"
 
 readonly MANIFEST_URL="https://github.com/minimal-manifest-twrp/platform_manifest_twrp_omni.git"
 readonly MANIFEST_BRANCH="twrp-5.1"
+readonly RECOVERY_BUDGET=10485248
 
 rlte_print() { printf '\033[34m[%s] %s\033[0m\n' "$0" "$*" ; }
 rlte_error() { printf '\033[31m[%s] error: %s\033[0m\n' "$0" "$*" >&2 ; exit 1; }
@@ -21,14 +23,14 @@ flags:
 
 commands:
     build           build recovery.img (must be explicit)
-    clean           remove twrp-build/out and recovery.img
-    prune           remove all of twrp-build and recovery.img
+    clean           remove "$BUILD"/out and recovery.img
+    prune           remove all of "$BUILD" and recovery.img
 EOF
 }
 
 do_build() {
-    mkdir -p twrp-build
-    cd twrp-build
+    mkdir -p "$BUILD"
+    cd "$BUILD"
 
     if [ ! -d .repo ]; then
 	rlte_print "Setting up repo"
@@ -86,7 +88,7 @@ shift $((OPTIND - 1))
 
 case "${1:-}" in
     build) do_build ;;
-    clean) rm -rf twrp-build/out recovery.img ;;
-    prune) rm -rf twrp-build recovery.img ;;
+    clean) rm -rf "$BUILD"/out recovery.img ;;
+    prune) rm -rf "$BUILD" recovery.img ;;
     *) usage; exit 1 ;;
 esac