diff --git a/src/item_use.c b/src/item_use.c
index fd74b7082b..d38c4b1f98 100644
--- a/src/item_use.c
+++ b/src/item_use.c
@@ -1491,7 +1491,7 @@ void FieldUseFunc_VsSeeker(u8 taskId)
         SetUpItemUseOnFieldCallback(taskId);
     }
     else
-        DisplayDadsAdviceCannotUseItemMessage(taskId, gTasks[taskId].data[3]);
+        DisplayDadsAdviceCannotUseItemMessage(taskId, gTasks[taskId].tUsingRegisteredKeyItem);
 }
 
 void Task_ItemUse_CloseMessageBoxAndReturnToField_VsSeeker(u8 taskId)