diff --git a/helpers/config b/helpers/config
index 337b77282e9c1c7e1d23d3ceabee35cb9925f8f2..3dcbfacc3c25e5200c3582f61eb800b23af7a83d 100755
--- a/helpers/config
+++ b/helpers/config
@@ -93,6 +93,7 @@ deb $DEVELMIRROR $CODENAME main
 EOF
 
 [ "1$EXTERNAL" != "1" ] && eval echo "$EXTERNAL" >> /etc/apt/sources.list
+[ "1$SIGNKEY" != "1" ] && apt-key adv --recv-keys --keyserver keyserver.ubuntu.com $SIGNKEY
 
 apt-get update
 apt-get install --force-yes -y devscripts