diff --git a/docs/PORTMASTER.md b/docs/PORTMASTER.md
index 803f72f..6fbeb26 100644
--- a/docs/PORTMASTER.md
+++ b/docs/PORTMASTER.md
@@ -67,15 +67,18 @@ are pinned to the same clean `main` commit:
 bash scripts/build_portmaster.sh
 ```
 
-The script deletes and regenerates the Linux ARM64 export, stages the package,
-validates its structure, and writes:
+The script deletes and regenerates a PortMaster-specific ARM64 export in
+`builds/v<project-version>/portmaster-arm64/`, stages the package, validates its
+structure, and writes:
 
 ```text
 builds/v<project-version>/straywild.zip
 ```
 
-`--package-only` is reserved for repackaging an already validated ARM64 export.
-It does not rebuild game content.
+`--package-only` is reserved for repackaging an already validated
+PortMaster-specific ARM64 export. It does not rebuild game content. The
+standard Linux ARM64 release staging directory remains separate so building
+PortMaster cannot replace the normal Linux ARM64 payload with reduced assets.
 
 For a packaging-only correction to an already published game release, commit
 only PortMaster launcher, packaging-script, or PortMaster documentation changes
diff --git a/scripts/build_playtest.sh b/scripts/build_playtest.sh
index 926794c..b4e6230 100755
--- a/scripts/build_playtest.sh
+++ b/scripts/build_playtest.sh
@@ -77,8 +77,8 @@ straywild code is licensed under GPL-3.0-or-later.
 Source repository: ${SOURCE_URL}
 Source revision at build time: ${SOURCE_COMMIT}
 
-This private testing release is distributed with an exact corresponding
-source archive named straywild-v0.20.3-alpha-source.tar.gz.
+The exact corresponding source revision is publicly available from the source
+repository above. Supporter builds do not include a separate source archive.
 
 If this package includes uncommitted development changes, it must not be
 publicly redistributed until the exact corresponding source is also made
diff --git a/scripts/build_portmaster.sh b/scripts/build_portmaster.sh
index 2d9dcbb..077167f 100755
--- a/scripts/build_portmaster.sh
+++ b/scripts/build_portmaster.sh
@@ -41,7 +41,7 @@ fi
 
 readonly RELEASE_TAG="v${PROJECT_VERSION}"
 readonly RELEASE_ROOT="${PROJECT_ROOT}/builds/${RELEASE_TAG}"
-readonly ARM64_ROOT="${RELEASE_ROOT}/linux-arm64"
+readonly ARM64_ROOT="${RELEASE_ROOT}/portmaster-arm64"
 readonly ARM64_EXECUTABLE="${ARM64_ROOT}/straywild.arm64"
 readonly ARM64_PCK="${ARM64_ROOT}/straywild.pck"
 readonly STAGE_ROOT="${RELEASE_ROOT}/portmaster-stage"