diff --git a/codex/sales.nim b/codex/sales.nim
index f62253af..7bacb0a6 100644
--- a/codex/sales.nim
+++ b/codex/sales.nim
@@ -147,6 +147,7 @@ proc start(negotiation: Negotiation) {.async.} =
 
     await retrieve(request.content.cid)
     let proof = await prove(request.content.cid)
+    await market.fulfillRequest(request.id, proof)
 
     await negotiation.sendOffer()
     await negotiation.subscribeSelect()
diff --git a/tests/codex/helpers/mockmarket.nim b/tests/codex/helpers/mockmarket.nim
index 0b782e9f..c257d4c3 100644
--- a/tests/codex/helpers/mockmarket.nim
+++ b/tests/codex/helpers/mockmarket.nim
@@ -10,9 +10,9 @@ type
     signer: Address
     subscriptions: Subscriptions
   Fulfillment* = object
-    requestId: array[32, byte]
-    proof: seq[byte]
-    host: Address
+    requestId*: array[32, byte]
+    proof*: seq[byte]
+    host*: Address
   Subscriptions = object
     onRequest: seq[RequestSubscription]
     onFulfillment: seq[FulfillmentSubscription]
diff --git a/tests/codex/testsales.nim b/tests/codex/testsales.nim
index 280a383f..212986a4 100644
--- a/tests/codex/testsales.nim
+++ b/tests/codex/testsales.nim
@@ -23,6 +23,7 @@ suite "Sales":
       cid: "some cid"
     )
   )
+  let proof = seq[byte].example
 
   var sales: Sales
   var market: MockMarket
@@ -33,7 +34,7 @@ suite "Sales":
     clock = MockClock.new()
     sales = Sales.new(market, clock)
     sales.retrieve = proc(_: string) {.async.} = discard
-    sales.prove = proc(_: string): Future[seq[byte]] {.async.} = discard
+    sales.prove = proc(_: string): Future[seq[byte]] {.async.} = return proof
     await sales.start()
 
   teardown:
@@ -94,6 +95,14 @@ suite "Sales":
     discard await market.requestStorage(request)
     check provingCid == request.content.cid
 
+  test "fulfills request":
+    sales.add(availability)
+    discard await market.requestStorage(request)
+    check market.fulfilled.len == 1
+    check market.fulfilled[0].requestId == request.id
+    check market.fulfilled[0].proof == proof
+    check market.fulfilled[0].host == await market.getSigner()
+
   # test "calls onSale when offer is selected":
   #   var sold: StorageOffer
   #   sales.onSale = proc(offer: StorageOffer) =