diff --git a/src/gdl_startup_sample b/src/gdl_startup_sample
index fa1a258..1d72180 100644
--- a/src/gdl_startup_sample
+++ b/src/gdl_startup_sample
@@ -1,10 +1,11 @@
 message,'This is a minimal IDL/GDL startup meant to be used for the Dustem-Wrapper in the context of the ISM Workshop',/info
 
-!path=!path+':'+'/Users/jpb/Soft_Librairies/gdl/src/pro'
-
 defsysv,'!psep',':'         ;idl path separator for a Mac/unix. To be changed for PCs
 defsysv,'!indef',-32768.    ;undefined value
 
+;must set this or equivalently have usinx variable GDL_PATH set to the appropriate gdl pro directory
+!path=!path+!psep+'/Users/jpb/Soft_Libraries/gdl/src/pro'
+
 ;===DUSTEM_WRAP release V1.3 (gitlab head version)
 ;This is the files to use for dustem4.3_wk
 defsysv,'!dustem_soft_dir',getenv('HOME')+'/Soft_Libraries/dustem4.3_wk/'
--
libgit2 0.21.2