diff --git a/build.sh b/build.sh
index 58574a6aed6891690d63c49c7f06adbf1a93d3b7..653e63f6fd7728099ef528cc35a3db24822f7b65 100644
--- a/build.sh
+++ b/build.sh
@@ -9,8 +9,8 @@ basedir=$(dirname "$(readlink -f "$0")")
 
 
 start=`date +%s`
-apt-get update
-apt-get install -y sudo 
+sudo apt-get update
+sudo apt-get install -y sudo 
 sudo apt-get install -y nano
 sudo apt-get update 
 sudo apt-get  install  -y scons libfftw3-dev libxm4 libmotif-dev python3-dev python3-pip