diff --git a/pipeline/beam_etl/helpers/materials.py b/pipeline/beam_etl/helpers/materials.py
index e41614f..fd60e8e 100644
--- a/pipeline/beam_etl/helpers/materials.py
+++ b/pipeline/beam_etl/helpers/materials.py
@@ -30,7 +30,7 @@ MATERIAL_MAPPING = {
     "polycarbonate": "plastic",
     "polypropylene": "plastic",
     "pvc": "plastic",
-    "resin": "plastic",
+    "resin": "resin",
     "stoneware": "stoneware",
     "cardboard": "cardboard",
     "paper": "cardboard",