diff --git a/kernel/model/flashcard.go b/kernel/model/flashcard.go
index 8afc132a4..719812084 100644
--- a/kernel/model/flashcard.go
+++ b/kernel/model/flashcard.go
@@ -314,7 +314,6 @@ func getDueFlashcards(deckID string) (ret []*Flashcard) {
 }
 
 func getAllDueFlashcards() (ret []*Flashcard) {
-	blockIDs := map[string]bool{}
 	now := time.Now()
 	for _, deck := range Decks {
 		cards := deck.Dues()
@@ -324,10 +323,6 @@ func getAllDueFlashcards() (ret []*Flashcard) {
 				continue
 			}
 
-			if blockIDs[blockID] {
-				continue
-			}
-
 			nextDues := map[riff.Rating]string{}
 			for rating, due := range card.NextDues() {
 				nextDues[rating] = strings.TrimSpace(util.HumanizeRelTime(due, now, Conf.Lang))
@@ -339,7 +334,6 @@ func getAllDueFlashcards() (ret []*Flashcard) {
 				BlockID:  blockID,
 				NextDues: nextDues,
 			})
-			blockIDs[blockID] = true
 		}
 	}
 	if 1 > len(ret) {