diff --git a/scriptmodules/setup.shinc b/scriptmodules/setup.shinc
index 496f090..bef9a75 100644
--- a/scriptmodules/setup.shinc
+++ b/scriptmodules/setup.shinc
@@ -233,7 +233,7 @@ function rrs_add_standard_repos()
 	add-apt-repository -y ppa:beauman/retrorig-testing
 	
 	# latest X11 drivers
-	add-apt-repository ppa:xorg-edgers/ppa
+	add-apt-repository -y ppa:xorg-edgers/ppa
 
 ######################################################################
 # install package repository and missing libraries