diff --git a/artifact/README b/artifact/README
index b1e4b1b91ba8dfdc369b34ff88a8f3911be90258..88e23d89bda1d153147df9b5607b56560a7c9d60 100644
--- a/artifact/README
+++ b/artifact/README
@@ -102,7 +102,7 @@ To run the code for the artifact four steps are required:
      The output shown at the command line should resemble this:
      
      ************************************************************
-     ~$ ./generate_results.sh
+     ~$ chmod a+x generate_results.sh && ./generate_results.sh
 
       ------------------------------------------------
       Scenario Theory: