diff --git a/lib/Settings/SystemConfig.php b/lib/Settings/SystemConfig.php
index 7814f071..bb1309fa 100644
--- a/lib/Settings/SystemConfig.php
+++ b/lib/Settings/SystemConfig.php
@@ -124,6 +125,14 @@ class SystemConfig
      */
     public static function get(string $key, mixed $default = null): mixed
     {
+        switch ($key) {
+          case "memories.exiftool": return "@exiftool@";
+          case "memories.exiftool_no_local": return false;
+          case "memories.vod.ffmpeg": return "@ffmpeg@";
+          case "memories.vod.ffprobe": return "@ffprobe@";
+          case "memories.vod.path": return "@go-vod@";
+        }
+
         if (!\array_key_exists($key, self::DEFAULTS)) {
             throw new \InvalidArgumentException("Invalid system config key: {$key}");
         }
@@ -154,6 +161,12 @@ public static function get(string $key, mixed $default = null): mixed
      */
     public static function set(string $key, mixed $value): void
     {
+        // Ignore those paths and always use the nix paths.
+        // We cannot return a proper error message except a 500 here without changing the code to much.
+        if (in_array($key, array("memories.exiftool", "memories.exiftool_no_local", "memories.vod.ffmpeg", "memories.vod.ffprobe", "memories.vod.path"))) {
+            throw new \InvalidArgumentException("Cannot set nix-managed key: {$key}");
+        }
+
         // Check if the key is valid
         if (!\array_key_exists($key, self::DEFAULTS)) {
             throw new \InvalidArgumentException("Invalid system config key: {$key}");