diff --git a/readme.md b/readme.md
index 736c2103252597302e6ca6c57310b740e843a042..d67174a3bf06239becccd9658d12b1fc3f8e294d 100644
--- a/readme.md
+++ b/readme.md
@@ -67,6 +67,8 @@ Verify install:
 ```
 >>> import leversc
 >>> leversc.test_random()
+or
+>>> from leversc import test_cells3d
 ```
 #### with source code
 1. Download or clone the full [LEVERSC repository](https://git-bioimage.coe.drexel.edu/opensource/leversc/-/archive/master/leversc-master.zip)