diff --git a/Selection-code.md b/Selection-code.md
index a93481a..59715e6 100644
--- a/Selection-code.md
+++ b/Selection-code.md
@@ -84,7 +84,7 @@ There are 5 levels of verbosity: The level of verbosity is defined in [GlobalFun
 
 
 # Running the code
-The code consists of several C++ scripts that are compiled and executed in ROOT. **Before every step, it is worth closing and opening ROOT**, as it is possible ROOT will complain about redefinition of functions. 
+The code consists of several C++ scripts that are compiled and executed in ROOT. **Before every step, it is worth closing and opening ROOT**, as it is possible ROOT will complain about redefinition of functions. I also highly recommend running on sigma0, d0new or delta and to source ROOT [with this manual](#setting-up-root). The newer ROOT versions changed some RooFit functions and it results in a segfault. So yeah. Go ROOT.
 
 We used ROOT 6.06.02. In order to run the sselection code, navigate to your folder with the code. Then, run a bashcript that will automatically create the necesarry fodler sturcture.
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