diff --git a/Mage/src/main/java/mage/watchers/common/ManaSpentToCastWatcher.java b/Mage/src/main/java/mage/watchers/common/ManaSpentToCastWatcher.java
index ef9461ad89b..4b194eaf8de 100644
--- a/Mage/src/main/java/mage/watchers/common/ManaSpentToCastWatcher.java
+++ b/Mage/src/main/java/mage/watchers/common/ManaSpentToCastWatcher.java
@@ -46,9 +46,9 @@ public class ManaSpentToCastWatcher extends Watcher {
                 return;
             case ZONE_CHANGE:
                 if (((ZoneChangeEvent) event).getFromZone() == Zone.BATTLEFIELD) {
-                    manaMap.remove(event.getSourceId());
-                    xValueMap.remove(event.getSourceId());
-                    xValueMapLong.remove(event.getSourceId());
+                    manaMap.remove(event.getTargetId());
+                    xValueMap.remove(event.getTargetId());
+                    xValueMapLong.remove(event.getTargetId());
                 }
         }
     }