diff --git a/portainer_agent/CHANGELOG.md b/portainer_agent/CHANGELOG.md
index 387e246f9a..bdfa4e309e 100644
--- a/portainer_agent/CHANGELOG.md
+++ b/portainer_agent/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 2025.12.7 (2026-08-23)
+
+- Fix: Docker reported the addon as `unhealthy` in Portainer. The healthcheck script could never run because its shebang required the s6-overlay environment, which this addon's entrypoint does not set up (https://github.com/alexbelgium/hassio-addons/issues/3002)
+- Remove the unused and broken `wait-for-signal` script; nothing invoked it
+
 ## 2025.12.6 (2026-08-01)
 
 - Version renamed from `2025.12-6`, which Home Assistant could not order and therefore could not reliably offer as an update: every number of the previous version is kept, as a section of its own. The addon itself and the upstream version it tracks are unchanged
diff --git a/portainer_agent/Dockerfile b/portainer_agent/Dockerfile
index cbdc4890c8..6cf096495a 100644
--- a/portainer_agent/Dockerfile
+++ b/portainer_agent/Dockerfile
@@ -81,8 +81,7 @@ RUN chmod 777 /ha_entrypoint.sh
 COPY bashio-standalone.sh /usr/local/lib/bashio-standalone.sh
 RUN chmod 0755 /usr/local/lib/bashio-standalone.sh
 
-RUN chmod a+x /usr/sbin/healthcheck && \
-    chmod a+x /usr/sbin/wait-for-signal
+RUN chmod a+x /usr/sbin/healthcheck
 WORKDIR "/app"
 
 ENTRYPOINT [ "/usr/bin/env" ]
diff --git a/portainer_agent/config.yaml b/portainer_agent/config.yaml
index af1b851e1a..80248c9b13 100644
--- a/portainer_agent/config.yaml
+++ b/portainer_agent/config.yaml
@@ -41,4 +41,4 @@ schema:
 slug: portainer_agent
 udev: true
 url: https://github.com/alexbelgium/hassio-addons
-version: "2025.12.6"
+version: "2025.12.7"
diff --git a/portainer_agent/rootfs/usr/sbin/healthcheck b/portainer_agent/rootfs/usr/sbin/healthcheck
index 7fb607a382..0fbd41134e 100644
--- a/portainer_agent/rootfs/usr/sbin/healthcheck
+++ b/portainer_agent/rootfs/usr/sbin/healthcheck
@@ -1,4 +1,8 @@
-#!/usr/bin/with-contenv bash
+#!/usr/bin/env bash
+# shellcheck shell=bash
+# Plain bash on purpose : ha_entrypoint.sh replaces s6-overlay's /init, so
+# /run/s6/container_environment is never created and a with-contenv shebang
+# would fail before this script runs. Nothing here needs the s6 environment.
 
 if [ -f "/tmp/healthcheck-signal" ]; then
   curl -k --fail https://127.0.0.1:9001/ping || exit 1
diff --git a/portainer_agent/rootfs/usr/sbin/wait-for-signal b/portainer_agent/rootfs/usr/sbin/wait-for-signal
deleted file mode 100644
index a50cfb6984..0000000000
--- a/portainer_agent/rootfs/usr/sbin/wait-for-signal
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/with-contenv bashio
-
-START_TIME="$(date +%s)"
-
-echo "Waiting for first healthcheck execution (max $FIRST_HEALTHCHECK_TIMEOUT seconds)..."
-
-while [ ! -f "/tmp/healthcheck-signal" ];
-do
-  sleep 1
-
-  ELAPSED_TIME="$(expr \date +%s\ - $START_TIME)"
-
-  if [ $ELAPSED_TIME -gt $FIRST_HEALTHCHECK_TIMEOUT ]
-  then
-    echo "Signal from healthcheck not received in time, failing the execution..."
-    exit 20
-  fi
-done
-
-echo "Signal from healthcheck received"
-exit 0
\ No newline at end of file