diff --git a/sprito.py b/sprito.py
index 6d19578..d1468df 100644
--- a/sprito.py
+++ b/sprito.py
@@ -13,7 +13,7 @@ class SpriteIndexed:
           if data_cell and data_cell != " ":
             set_pixel(x + xoff, y + yoff, pallet[data_cell])
           i += 1
-  def to_raw(self, pallet: dict):
+  def to_raw(self, pallet: dict) -> SpriteRaw:
     raw_data = []
     for i in range(len(self.data)):
       data_cell = self.data[i]