diff --git a/data/json/harvest.json b/data/json/harvest.json
index c360f58d5f9ae..ca4d7d44442f6 100644
--- a/data/json/harvest.json
+++ b/data/json/harvest.json
@@ -643,7 +643,7 @@
       { "drop": "mutant_kidney", "type": "offal", "mass_ratio": 0.002 },
       { "drop": "stomach_large", "scale_num": [ 1, 1 ], "max": 1, "type": "offal" },
       { "drop": "bone", "type": "bone", "mass_ratio": 0.15 },
-      { "drop": "bone_marrow", "type": "bone", "mass_ratio": 0.005 },
+      { "drop": "mutant_marrow", "type": "bone", "mass_ratio": 0.005 },
       { "drop": "sinew", "type": "bone", "mass_ratio": 0.00035 },
       { "drop": "raw_fur", "type": "skin", "mass_ratio": 0.02 },
       { "drop": "mutant_fat", "type": "flesh", "mass_ratio": 0.07 }