diff --git a/tools/addon/nextcloud-exporter.sh b/tools/addon/nextcloud-exporter.sh
index ae65b9d7e..31762d591 100644
--- a/tools/addon/nextcloud-exporter.sh
+++ b/tools/addon/nextcloud-exporter.sh
@@ -24,6 +24,14 @@ BINARY_PATH="/usr/bin/nextcloud-exporter"
 CONFIG_PATH="/etc/nextcloud-exporter.env"
 SERVICE_PATH="/etc/systemd/system/nextcloud-exporter.service"
 
+# ==============================================================================
+# OS DETECTION
+# ==============================================================================
+if ! grep -qE 'ID=debian|ID=ubuntu' /etc/os-release 2>/dev/null; then
+  echo -e "${CROSS} Unsupported OS detected. This script only supports Debian and Ubuntu."
+  exit 1
+fi
+
 # ==============================================================================
 # UNINSTALL
 # ==============================================================================