diff --git a/README.txt b/README.txt
index db4239b..5d25e7c 100644
--- a/README.txt
+++ b/README.txt
@@ -5,13 +5,14 @@ WARNING: scitools is still in a development stage - a number of
 commands are in active development.
 
 SETUP: To set up scitools, download the repository to the
-location you want the executable to be. Keep all index files
-and folders within the scitools directory. We recommend adding
-the scitools execulable to your path. We also recommend editing the
-scitools.cfg file to add in command-line callable executables used
-by scitools, defaults assume they are all in your path. Once it is
-set up, run 'scitools dependencies' which will check for external
-software that scitools relies on.
+location you want the executable to be. Then change the 
+permission of `scitools` using `chmod 755 scitools` command.
+Keep all index files and folders within the scitools directory. 
+We recommend adding the scitools execulable to your path. We 
+also recommend editing the scitools.cfg file to add in command-line
+callable executables used by scitools, defaults assume they are all
+in your path. Once it is set up, run 'scitools dependencies' which 
+will check for external software that scitools relies on.
 
 DESCRIPTION: scitools is a set of scripts designed for working with
 single-cell combinatorial indexing data. It includes tools to go from