diff --git a/readme.md b/readme.md
index 21476aa..df29d7c 100644
--- a/readme.md
+++ b/readme.md
@@ -12,7 +12,7 @@ Make sure you prepared your GPS device like described in chapter 3.3 of the Docu
 Start gyrogpsc **before** connecting your smartphone via TCP. Make sure you updated the config file with the correct COM port for your ublox device, before starting the Serial Collector from the UI.
 
 ## Run
-Execute `gyropgsc-$OS`, according to your operating system.
+Execute `gyropgsc-$OS`, according to your operating system. Make sure the containing folder is your working directory.
 
 
 # Build and run from source