diff --git a/server/setup.sh b/server/setup.sh
index a027981..ba3fe32 100755
--- a/server/setup.sh
+++ b/server/setup.sh
@@ -53,7 +53,8 @@ src_user="${SUDO_USER:-ubuntu}"
 src_keys="$(getent passwd "$src_user" | cut -d: -f6)/.ssh/authorized_keys"
 install -d -o crm -g crm -m 700 "$ROOT/.ssh"
 if [ -f "$src_keys" ]; then
-  cat "$src_keys" "$ROOT/.ssh/authorized_keys" 2>/dev/null | sort -u > "$ROOT/.ssh/authorized_keys.new"
+  touch "$ROOT/.ssh/authorized_keys"  # bij de eerste keer bestaat hij nog niet (en cat zou dan set -e laten stoppen)
+  sort -u "$src_keys" "$ROOT/.ssh/authorized_keys" > "$ROOT/.ssh/authorized_keys.new"
   mv "$ROOT/.ssh/authorized_keys.new" "$ROOT/.ssh/authorized_keys"
   chown crm:crm "$ROOT/.ssh/authorized_keys"; chmod 600 "$ROOT/.ssh/authorized_keys"
   say "SSH-sleutels van $src_user toegevoegd aan crm"