diff --git a/eco-api/src/main/kotlin/com/willfp/eco/core/gui/GUIHelpers.kt b/eco-api/src/main/kotlin/com/willfp/eco/core/gui/GUIHelpers.kt
index cdcf92f9..3b753125 100644
--- a/eco-api/src/main/kotlin/com/willfp/eco/core/gui/GUIHelpers.kt
+++ b/eco-api/src/main/kotlin/com/willfp/eco/core/gui/GUIHelpers.kt
@@ -46,6 +46,7 @@ fun SlotBuilder.onMiddleClick(action: (InventoryClickEvent, Slot, Menu) -> Unit)
  * @deprecated Use SlotUpdater instead.
  */
 @Deprecated("Use SlotUpdater instead")
+@Suppress("DEPRECATION")
 fun SlotBuilder.setModifier(action: (Player, Menu, ItemStack) -> Unit): SlotBuilder =
     this.setModifier { a, b, c -> action(a, b, c) }