diff --git a/backend/scripts/p2-acceptance.mjs b/backend/scripts/p2-acceptance.mjs
index fd9762b6..1dd5fd66 100644
--- a/backend/scripts/p2-acceptance.mjs
+++ b/backend/scripts/p2-acceptance.mjs
@@ -1141,7 +1141,7 @@ async function realChecks(ctx) {
         const snapshot = await loadWorkspaceSnapshot(ctx, "p2-dwh");
         assert(response.payload.workspaceId === "p2-dwh", "inspect workspace id mismatch");
         assert(response.payload.workspaceRevision === snapshot.active.head, "inspect revision mismatch");
-        assert(`sha256:${snapshot.revision.blob}` === response.payload.descriptorBlob, "inspect descriptor mismatch");
+        assert(`sha256:${sha256(snapshot.contents)}` === response.payload.descriptorBlob, "inspect descriptor mismatch");
         state.inspect = response.payload;
         return { commands: ["thothctl"], artifacts: response.artifacts };
       },