diff --git a/surround360_render/RENDER.md b/surround360_render/RENDER.md
index 10d7c033..b189dc8c 100644
--- a/surround360_render/RENDER.md
+++ b/surround360_render/RENDER.md
@@ -24,12 +24,12 @@ render
 └── config
     ├── camera_rig.json
     └── isp
-      └── <serial_number>.json
+      └── <i>serial_number</i>.json
 </pre>
 
 It is strongly recommended that the steps in CALIBRATION.md are followed in other to create customized files for each camera. These are:
 
-- config/isp/<serial_number>.json: output of color calibration and optical vignetting calibration
+- config/isp/*serial_number*.json: output of color calibration and optical vignetting calibration
 - config/camera_rig.json: output of geometric calibration
 
 If an older version of the software that did not have geometric calibration steps in CALIBRATION.md is used, the software will expect these files instead: