diff --git a/forge-gui/src/main/java/forge/player/PlayerControllerHuman.java b/forge-gui/src/main/java/forge/player/PlayerControllerHuman.java
index a3135c1e82d..922eef65793 100644
--- a/forge-gui/src/main/java/forge/player/PlayerControllerHuman.java
+++ b/forge-gui/src/main/java/forge/player/PlayerControllerHuman.java
@@ -211,6 +211,10 @@ public class PlayerControllerHuman extends PlayerController implements IGameCont
     @Override
     public SpellAbility getAbilityToPlay(final Card hostCard, final List<SpellAbility> abilities,
             final ITriggerEvent triggerEvent) {
+        // make sure another human player can't choose opponents cards just because he might see them
+        if (!hostCard.isInZone(ZoneType.Battlefield) && !hostCard.getOwner().equals(player) && !hostCard.getController().equals(player) && hostCard.mayPlay(player).size() == 0) {
+            return null;
+        }
         spellViewCache = SpellAbilityView.getMap(abilities);
         final SpellAbilityView resultView = getGui().getAbilityToPlay(CardView.get(hostCard),
                 Lists.newArrayList(spellViewCache.keySet()), triggerEvent);