diff --git a/debian/configure_fresh_system b/debian/configure_fresh_system
index 34dd9c19..23023f61 100755
--- a/debian/configure_fresh_system
+++ b/debian/configure_fresh_system
@@ -24,7 +24,7 @@ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328
 echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
 echo "deb http://download.mono-project.com/repo/debian wheezy-libjpeg62-compat main" | sudo tee -a /etc/apt/sources.list.d/mono-xamarin.list
 sudo apt-get update
-sudo apt-get install mono-devel mono-complete 
+sudo apt-get -y install mono-devel mono-complete 
 # install vim from sources
 VIM_BUILD_DIR=/tmp
 cd "$VIM_BUILD_DIR"