diff --git a/test/Marketplace.test.js b/test/Marketplace.test.js
index 38b89de..8b9955e 100644
--- a/test/Marketplace.test.js
+++ b/test/Marketplace.test.js
@@ -357,6 +357,20 @@ describe("Marketplace", function () {
       await expect(await marketplace.isCancelled(slot.request)).to.equal(true)
     })
 
+    it("isSlotCancelled fails when slot is empty", async function () {
+      await expect(
+        marketplace.isSlotCancelled(slotId(slot))
+      ).to.be.revertedWith("Slot empty")
+    })
+
+    it("isSlotCancelled is true once request is cancelled", async function () {
+      await marketplace.fillSlot(slot.request, slot.index, proof)
+      await waitUntilExpired(request.expiry)
+      await expect(await marketplace.isSlotCancelled(slotId(slot))).to.equal(
+        true
+      )
+    })
+
     it("state is Cancelled when client withdraws funds", async function () {
       await expect(await marketplace.state(slot.request)).to.equal(
         RequestState.New
diff --git a/test/Storage.test.js b/test/Storage.test.js
index a3a76ba..d4de434 100644
--- a/test/Storage.test.js
+++ b/test/Storage.test.js
@@ -111,6 +111,15 @@ describe("Storage", function () {
       const expectedBalance = (collateralAmount * (100 - slashPercentage)) / 100
       expect(await storage.balanceOf(host.address)).to.equal(expectedBalance)
     })
+
+    it("fails to mark proof as missing when cancelled", async function () {
+      await storage.fillSlot(slot.request, slot.index, proof)
+      await advanceTimeTo(request.expiry + 1)
+      let missedPeriod = periodOf(await currentTime())
+      await expect(
+        storage.markProofAsMissing(slotId(slot), missedPeriod)
+      ).to.be.revertedWith("Request was cancelled")
+    })
   })
 })