diff --git a/readme.md b/readme.md
index 0ca4793..9a2bd72 100644
--- a/readme.md
+++ b/readme.md
@@ -31,7 +31,7 @@ Explanations on some json parameters:
 
 **Important arguments:**
 
-`use_ram`: Set to "yes" to load data into maim memory.
+`use_ram`: Set to "yes" to load data into main memory.
 
 `crop_cam`: How to crop the image, it will change the camera intrinsic accordingly.