diff --git a/res/cardsfolder/p/paralyze.txt b/res/cardsfolder/p/paralyze.txt
index 0e2ae19a93b..8511e194124 100644
--- a/res/cardsfolder/p/paralyze.txt
+++ b/res/cardsfolder/p/paralyze.txt
@@ -7,7 +7,7 @@ T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Card.S
 SVar:TrigTap:AB$ Tap | Cost$ 0 | Defined$ Enchanted
 S:Mode$ Continuous | Affected$ Creature.EnchantedBy | AddHiddenKeyword$ CARDNAME doesn't untap during your untap step. | Description$ Enchanted creature doesn't untap during its controller's untap step.
 T:Mode$ Phase | Phase$ Upkeep | ValidPlayer$ EnchantedController | TriggerZones$ Battlefield | Execute$ TrigUntap | TriggerDescription$ At the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If he or she does, untap the creature.
-SVar:TrigUntap:AB$ Untap | Cost$ 0 | Defined$ Enchanted | UnlessCost$ 4 | UnlessPayer$ EnchantedController | UnlessSwitched$ True
+SVar:TrigUntap:AB$ Untap | Cost$ 0 | Defined$ Enchanted | UnlessCost$ 4 | UnlessPayer$ EnchantedController | UnlessSwitched$ True | UnlessAI$ Paralyze
 SVar:Picture:http://www.wizards.com/global/images/magic/general/paralyze.jpg
 Oracle:Enchant creature\nWhen Paralyze enters the battlefield, tap enchanted creature.\nEnchanted creature doesn't untap during its controller's untap step.\nAt the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If he or she does, untap the creature.
 SetInfo:2ED Common
diff --git a/src/main/java/forge/game/ai/ComputerUtilCost.java b/src/main/java/forge/game/ai/ComputerUtilCost.java
index 5871e39a76f..61c909809f5 100644
--- a/src/main/java/forge/game/ai/ComputerUtilCost.java
+++ b/src/main/java/forge/game/ai/ComputerUtilCost.java
@@ -385,7 +385,7 @@ public class ComputerUtilCost {
     }
 
     public static boolean willPayUnlessCost(SpellAbility sa, Player payer, SpellAbility ability, boolean alreadyPaid, List<Player> payers) {
-        Card source = sa.getSourceCard();
+        final Card source = sa.getSourceCard();
         boolean payForOwnOnly = "OnlyOwn".equals(sa.getParam("UnlessAI"));
         boolean payOwner = sa.hasParam("UnlessAI") ? sa.getParam("UnlessAI").startsWith("Defined") : false;
         boolean payNever = "Never".equals(sa.getParam("UnlessAI"));
@@ -410,6 +410,11 @@ public class ComputerUtilCost {
                 }
             }
             return false;
+        } else if ("Paralyze".equals(sa.getParam("UnlessAI"))) {
+            final Card c = source.getEnchantingCard();
+            if (c == null || c.isUntapped()) {
+                return false;
+            }
         }
     
         // AI will only pay when it's not already payed and only opponents abilities