diff --git a/Writing-tests-in-FreeSWITCH.md b/Writing-tests-in-FreeSWITCH.md
index 35c69de..d73a1e7 100644
--- a/Writing-tests-in-FreeSWITCH.md
+++ b/Writing-tests-in-FreeSWITCH.md
@@ -145,6 +145,7 @@ TESTS = $(noinst_PROGRAMS)
 ```
 
 ## Running the tests
+Make sure you did run `make install` after build.
 
 To run the FreeSWITCH core/module tests:
 `make check`