diff --git a/billing/lib/ucan-stream.js b/billing/lib/ucan-stream.js
index 1618e19e..58871a41 100644
--- a/billing/lib/ucan-stream.js
+++ b/billing/lib/ucan-stream.js
@@ -99,6 +99,11 @@ export const storeSpaceUsageDeltas = async (deltas, ctx) => {
     spaceDiffs.push(...res.ok)
   }
 
+  if (spaceDiffs.length === 0) return {
+    ok: 'no space diffs to store',
+    error: undefined
+  }
+
   return ctx.spaceDiffStore.batchPut(spaceDiffs)
 }