diff --git a/data/json/items/generic/string.json b/data/json/items/generic/string.json
index 3deb4120879dc..141b73783b5d6 100644
--- a/data/json/items/generic/string.json
+++ b/data/json/items/generic/string.json
@@ -100,6 +100,7 @@
     "category": "spare_parts",
     "name": "fibrous stalk",
     "symbol": "=",
+    "material": "dry_plant",
     "description": "A rather green stick.  Very fibrous.",
     "fun": -100,
     "healthy": -20,