diff --git a/src/NetscriptFunctions/Corporation.ts b/src/NetscriptFunctions/Corporation.ts
index 8fe9f552a..97f6694c3 100644
--- a/src/NetscriptFunctions/Corporation.ts
+++ b/src/NetscriptFunctions/Corporation.ts
@@ -352,6 +352,7 @@ export function NetscriptCorporation(
       const materialName = helper.string("getMaterial", "materialName", _materialName);
       const material = getMaterial(divisionName, cityName, materialName);
       return {
+        cost: material.bCost,
         name: material.name,
         qty: material.qty,
         qlt: material.qlt,
diff --git a/src/ScriptEditor/NetscriptDefinitions.d.ts b/src/ScriptEditor/NetscriptDefinitions.d.ts
index 4ff95de9b..4d5ecaea0 100644
--- a/src/ScriptEditor/NetscriptDefinitions.d.ts
+++ b/src/ScriptEditor/NetscriptDefinitions.d.ts
@@ -6915,10 +6915,12 @@ interface Material {
   qty: number;
   /** Quality of the material */
   qlt: number;
-  /** Amount of material produced  */
+  /** Amount of material produced */
   prod: number;
-  /** Amount of material sold  */
+  /** Amount of material sold */
   sell: number;
+  /** cost to buy material */
+  cost: number;
 }
 
 /**