diff --git a/keyboards/mariorion_v25/readme.md b/keyboards/mariorion_v25/readme.md
index 0b066d8adf6..4d834ce3486 100644
--- a/keyboards/mariorion_v25/readme.md
+++ b/keyboards/mariorion_v25/readme.md
@@ -10,14 +10,16 @@
 
 Make example for this keyboard (after setting up your build environment):
 
-    make mariorion_v25:default
+    make mariorion_v25/prod:default
 
 Flashing example for this keyboard:
 
-    make mariorion_v25:default:flash
+    make mariorion_v25/prod:default:flash
 
 See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
 
+Note: change prod to proto if you have a prototype PCB.
+
 ## Bootloader
 
 Enter the bootloader in 3 ways: