diff --git a/README.md b/README.md
index f8937de..126f814 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,10 @@ git clone https://git.minres.com/SystemC/PySysC.git
 python3 -m pip install -e PySysC
 ```
 
+## Testing (preliminary)
+
+To use the tests you also need to clone and build the PySysC-SC repo as sibling of PySysC. It contains the the code and libraries being used in the test.
+
 ## TODO
 
 * pythonize `sc_module` with iteration protocol (`__next__` and `StopIteration`  exception)