diff --git a/data/json/items/melee/swords_and_blades.json b/data/json/items/melee/swords_and_blades.json
index ddfeaab699e21..734a6e551bab3 100644
--- a/data/json/items/melee/swords_and_blades.json
+++ b/data/json/items/melee/swords_and_blades.json
@@ -244,9 +244,9 @@
     "type": "TOOL",
     "name": { "str": "makeshift knife", "str_pl": "makeshift knives" },
     "description": "A knife consisting of a long, somewhat sharpened, spike and a tightly wrapped rag as a handle.  It makes a good melee weapon.",
-    "weight": "550 g",
-    "volume": "251 ml",
-    "longest_side": "20 cm",
+    "weight": "575 g",
+    "volume": "260 ml",
+    "longest_side": "7 cm",
     "price": 0,
     "price_postapoc": 50,
     "to_hit": -1,