diff --git a/storage/wdpost_run.go b/storage/wdpost_run.go
index c0c36b8c4ca..7bda4e54894 100644
--- a/storage/wdpost_run.go
+++ b/storage/wdpost_run.go
@@ -595,6 +595,11 @@ func (s *WindowPoStScheduler) runPoStCycle(ctx context.Context, manual bool, di
 				if err != nil {
 					return nil, xerrors.Errorf("removing faults from set of sectors to prove: %w", err)
 				}
+				if manual {
+					// this is a check run, we want to prove faulty sectors, even
+					// if they are not declared as recovering.
+					toProve = partition.LiveSectors
+				}
 				toProve, err = bitfield.MergeBitFields(toProve, partition.RecoveringSectors)
 				if err != nil {
 					return nil, xerrors.Errorf("adding recoveries to set of sectors to prove: %w", err)