diff --git a/contracts/Marketplace.sol b/contracts/Marketplace.sol
index 8be5a3d..d7e2f2e 100644
--- a/contracts/Marketplace.sol
+++ b/contracts/Marketplace.sol
@@ -162,7 +162,7 @@ contract Marketplace is Proofs, StateRetrieval {
 
     delete _slots[slotId];
     context.slotsFilled -= 1;
-    emit SlotFreed(requestId, slotId);
+    emit SlotFreed(requestId, slot.slotIndex, slotId);
     resetMissingProofs(slotId);
 
     Request storage request = _requests[requestId];
@@ -319,7 +319,11 @@ contract Marketplace is Proofs, StateRetrieval {
     uint256 indexed slotIndex,
     SlotId slotId
   );
-  event SlotFreed(RequestId indexed requestId, SlotId slotId);
+  event SlotFreed(
+    RequestId indexed requestId,
+    uint256 slotIndex,
+    SlotId slotId
+  );
   event RequestCancelled(RequestId indexed requestId);
 
   modifier marketplaceInvariant() {
diff --git a/test/Marketplace.test.js b/test/Marketplace.test.js
index 4392618..ad995c9 100644
--- a/test/Marketplace.test.js
+++ b/test/Marketplace.test.js
@@ -375,7 +375,7 @@ describe("Marketplace", function () {
       await waitUntilStarted(marketplace, request, proof, token)
       await expect(await marketplace.freeSlot(id))
         .to.emit(marketplace, "SlotFreed")
-        .withArgs(slot.request, id)
+        .withArgs(slot.request, slot.index, id)
     })
   })