diff --git a/README.md b/README.md
index b61c4c2d..221b1aa7 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ Every module or function is located in the file which has the same name as the m
 
 	line2d(p1 = [0, 0], p2 = [5, 0], width = 1);
 
+I set `OPENSCADPATH` to the `src` folder of dotSCAD so all examples here start searching modules or functions from `src`. If you put dotSCAD in the `libraries` of OpenSCAD, you'll have to prefix `dotSCAD/src` when using them. For example, `use <dotSCAD/src/line2d.scad>;`
+
 Some module files are organized in a directory. For example, px_circle.scad exists in `pixel` directory. You have to prefix the directory name when including `px_circle`.
 
     use <pixel/px_circle.scad>;