diff --git a/res/cardsfolder/s/sylvan_library.txt b/res/cardsfolder/s/sylvan_library.txt
index 8edff78064c..af4fcfa517b 100644
--- a/res/cardsfolder/s/sylvan_library.txt
+++ b/res/cardsfolder/s/sylvan_library.txt
@@ -3,7 +3,7 @@ ManaCost:1 G
 Types:Enchantment
 T:Mode$ Phase | Phase$ Draw | ValidPlayer$ You | TriggerZones$ Battlefield | Execute$ TrigDraw | OptionalDecider$ You |TriggerDescription$ At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.
 SVar:TrigDraw:AB$ Draw | Cost$ 0 | Defined$ TriggeredPlayer | NumCards$ 2 | SubAbility$ ChooseDrawn
-SVar:ChooseDrawn:DB$ ChooseCard | ChoiceZone$ Hand | Choices$ Card.YouOwn+DrawnThisTurn | Amount$ 2 | RememberChosen$ True | AILogic$ Worst | SubAbility$ DBPayOrReturn
+SVar:ChooseDrawn:DB$ ChooseCard | ChoiceZone$ Hand | Choices$ Card.YouOwn+DrawnThisTurn | Amount$ 2 | RememberChosen$ True | Mandatory$ True | AILogic$ Worst | SubAbility$ DBPayOrReturn
 SVar:DBPayOrReturn:DB$ RepeatEach | UseImprinted$ True | RepeatCards$ Card.IsRemembered | Zone$ Hand | RepeatSubAbility$ DBReplace | SubAbility$ DBCleanup
 SVar:DBReplace:DB$ ChangeZone | Origin$ Hand | Destination$ Library | ChangeType$ Card.IsImprinted | UnlessCost$ PayLife<4> | UnlessPayer$ TriggeredPlayer | SubAbility$ DBCleanup
 SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True