diff --git a/api/resources/prices.py b/api/resources/prices.py
index 3407716..ff3b984 100644
--- a/api/resources/prices.py
+++ b/api/resources/prices.py
@@ -36,7 +36,7 @@ def wallpaper():
         data.append({
             'material': material.name,
             'material_id': material.id,
-            'material_price': m2_price(material, market, reseller=reseller, inc_vat=True),
+            'm2_price': m2_price(material, market, reseller=reseller, inc_vat=True),
             'price': wallpaper_price(width, height, material, market, reseller=reseller),
         })
 
diff --git a/docs/prices.md b/docs/prices.md
index 33b5f78..ddcce80 100644
--- a/docs/prices.md
+++ b/docs/prices.md
@@ -25,13 +25,13 @@ Sample response
     {
       "material": "standard-wallpaper",
       "material_id": 1,
-      "material_price": 295,
+      "m2_price": 295,
       "price": 1180
     },
     {
       "material": "premium-wallpaper",
       "material_id": 4,
-      "material_price": 325,
+      "m2_price": 325,
       "price": 1300
     }
   ]