diff --git a/tests/contracts/testContracts.nim b/tests/contracts/testContracts.nim
index a04c9786..f7bf2c79 100644
--- a/tests/contracts/testContracts.nim
+++ b/tests/contracts/testContracts.nim
@@ -42,7 +42,7 @@ ethersuite "Marketplace contracts":
     await marketplace.requestStorage(request)
     switchAccount(host)
     discard await token.approve(marketplace.address, request.ask.collateral)
-    await marketplace.fillSlot(request.id, 0.u256, proof)
+    discard await marketplace.fillSlot(request.id, 0.u256, proof)
     slotId = request.slotId(0.u256)
 
   proc waitUntilProofRequired(slotId: SlotId) {.async.} =
@@ -57,7 +57,7 @@ ethersuite "Marketplace contracts":
   proc startContract() {.async.} =
     for slotIndex in 1..<request.ask.slots:
       discard await token.approve(marketplace.address, request.ask.collateral)
-      await marketplace.fillSlot(request.id, slotIndex.u256, proof)
+      discard await marketplace.fillSlot(request.id, slotIndex.u256, proof)
 
   test "accept marketplace proofs":
     switchAccount(host)