diff --git a/forge-gui/res/cardsfolder/upcoming/mass_diminish.txt b/forge-gui/res/cardsfolder/upcoming/mass_diminish.txt
index 2ca197ed249..ec0281d5902 100644
--- a/forge-gui/res/cardsfolder/upcoming/mass_diminish.txt
+++ b/forge-gui/res/cardsfolder/upcoming/mass_diminish.txt
@@ -1,6 +1,6 @@
 Name:Mass Diminish
 ManaCost:1 U
 Types:Sorcery
-A:SP$ AnimateAll | Cost$ 1 U | ValidTgts$ Player | TgtPrompt$ Select target player | ValidCards$ Creature | Power$ 1 | Toughness$ 1 | IsCurse$ True | SpellDescription$ Until your next turn, creatures target player controls have base power and toughness 1/1.
+A:SP$ AnimateAll | Cost$ 1 U | ValidTgts$ Player | TgtPrompt$ Select target player | ValidCards$ Creature | Power$ 1 | Toughness$ 1 | IsCurse$ True | UntilYourNextTurn$ True | SpellDescription$ Until your next turn, creatures target player controls have base power and toughness 1/1.
 K:Flashback:3 U
 Oracle:Until your next turn, creatures target player controls have base power and toughness 1/1.\nFlashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)