diff --git a/scripts/src/hwlab-node/web-probe-observe.ts b/scripts/src/hwlab-node/web-probe-observe.ts
index 01c0f94a..afb74fcd 100644
--- a/scripts/src/hwlab-node/web-probe-observe.ts
+++ b/scripts/src/hwlab-node/web-probe-observe.ts
@@ -513,7 +513,8 @@ export function runNodeWebProbeScreenshot(options: NodeWebProbeScreenshotOptions
     "30000",
     ...(options.keepRemote ? ["--keep-remote"] : []),
   ], repoRoot, { input: script, timeoutMs: options.commandTimeoutSeconds * 1000 });
-  const transport = parseJsonObject(result.stdout);
+  const transport = record(parseJsonObject(result.stdout));
+  const transportParsed = Object.keys(transport).length > 0;
   const artifacts = Array.isArray(transport.artifacts) ? transport.artifacts.map(record) : [];
   const screenshot = artifacts.find((artifact) => {
     const remotePath = typeof artifact.remotePath === "string" ? artifact.remotePath : "";
@@ -529,11 +530,13 @@ export function runNodeWebProbeScreenshot(options: NodeWebProbeScreenshotOptions
     ? null
     : result.timedOut
       ? "web-probe-screenshot-command-timeout"
-      : transport.ok === false
-        ? "web-probe-screenshot-remote-failed"
-        : screenshot === null
-          ? "web-probe-screenshot-artifact-missing"
-          : "web-probe-screenshot-download-unverified";
+      : !transportParsed
+        ? "web-probe-screenshot-transport-unparseable"
+        : transport.ok === false
+          ? "web-probe-screenshot-remote-failed"
+          : screenshot === null
+            ? "web-probe-screenshot-artifact-missing"
+            : "web-probe-screenshot-download-unverified";
   return {
     ok,
     status: ok ? "pass" : "blocked",