diff --git a/codex/sales/states/proving.nim b/codex/sales/states/proving.nim
index 3d73ad06..6af5b011 100644
--- a/codex/sales/states/proving.nim
+++ b/codex/sales/states/proving.nim
@@ -1,6 +1,7 @@
 import std/options
 import pkg/chronicles
 import ../../clock
+import ../../utils/exceptions
 import ../statemachine
 import ../salesagent
 import ../salescontext
@@ -29,8 +30,10 @@ method prove*(
     let proof = await onProve(slot)
     debug "Submitting proof", currentPeriod = currentPeriod, slotId = $slot.id
     await market.submitProof(slot.id, proof)
+  except CancelledError:
+    discard
   except CatchableError as e:
-    error "Submitting proof failed", msg = e.msg
+    error "Submitting proof failed", msg = e.msgDetail
 
 proc proveLoop(
   state: SaleProving,
@@ -84,7 +87,7 @@ method onCancelled*(state: SaleProving, request: StorageRequest): ?State =
       try:
         waitFor state.loop.cancelAndWait()
       except CatchableError as e:
-        error "Error during cancelation of prooving loop", msg = e.msg
+        error "Error during cancellation of proving loop", msg = e.msg
 
     state.loop = nil
 
@@ -96,7 +99,7 @@ method onFailed*(state: SaleProving, request: StorageRequest): ?State =
       try:
         waitFor state.loop.cancelAndWait()
       except CatchableError as e:
-        error "Error during cancelation of prooving loop", msg = e.msg
+        error "Error during cancellation of proving loop", msg = e.msg
 
     state.loop = nil
 
@@ -136,12 +139,12 @@ method run*(state: SaleProving, machine: Machine): Future[?State] {.async.} =
     debug "Stopping proving.", requestId = $data.requestId, slotIndex
 
     if not state.loop.isNil:
-        if not state.loop.finished:
-          try:
-            await state.loop.cancelAndWait()
-          except CatchableError as e:
-            error "Error during cancelation of prooving loop", msg = e.msg
+      if not state.loop.finished:
+        try:
+          await state.loop.cancelAndWait()
+        except CatchableError as e:
+          error "Error during cancellation of proving loop", msg = e.msg
 
-        state.loop = nil
+      state.loop = nil
 
   return some State(SalePayout())
diff --git a/codex/sales/states/provingsimulated.nim b/codex/sales/states/provingsimulated.nim
index 4ed9bba1..501987b5 100644
--- a/codex/sales/states/provingsimulated.nim
+++ b/codex/sales/states/provingsimulated.nim
@@ -8,6 +8,7 @@ when codex_enable_proof_failures:
 
   import ../../contracts/requests
   import ../../market
+  import ../../utils/exceptions
   import ../salescontext
   import ./proving
 
@@ -20,7 +21,7 @@ when codex_enable_proof_failures:
       proofCount: int
 
   proc onSubmitProofError(error: ref CatchableError, period: UInt256, slotId: SlotId) =
-    error "Submitting invalid proof failed", period = period, slotId = $slotId, msg = error.msg
+    error "Submitting invalid proof failed", period = period, slotId = $slotId, msg = error.msgDetail
 
   method prove*(state: SaleProvingSimulated, slot: Slot, onProve: OnProve, market: Market, currentPeriod: Period) {.async.} =
     trace "Processing proving in simulated mode"
@@ -32,8 +33,8 @@ when codex_enable_proof_failures:
       try:
         warn "Submitting INVALID proof", period = currentPeriod, slotId = slot.id
         await market.submitProof(slot.id, newSeq[byte](0))
-      except ProviderError as e:
-        if not e.revertReason.contains("Invalid proof"):
+      except SignerError as e:
+        if not e.msgDetail.contains("Invalid proof"):
           onSubmitProofError(e, currentPeriod, slot.id)
       except CatchableError as e:
         onSubmitProofError(e, currentPeriod, slot.id)