diff --git a/database/migrations/2025_04_07_193811_create_sticker_masters_table.php b/database/migrations/2025_04_07_193811_create_sticker_masters_table.php
index d0f54f34f..1db27bf95 100644
--- a/database/migrations/2025_04_07_193811_create_sticker_masters_table.php
+++ b/database/migrations/2025_04_07_193811_create_sticker_masters_table.php
@@ -51,6 +51,7 @@ return new class extends Migration
             updated_at      				TIMESTAMP NOT NULL DEFAULT NOW(),
             deleted_at      				TIMESTAMP,
 
+            UNIQUE (plant_id, item_id),
             FOREIGN KEY (item_id)  REFERENCES  items (id),
             FOREIGN KEY (plant_id) REFERENCES  plants (id)
         );