diff --git a/webtrees/rootfs/run.sh b/webtrees/rootfs/run.sh
index dfffd1599..16b77caf4 100644
--- a/webtrees/rootfs/run.sh
+++ b/webtrees/rootfs/run.sh
@@ -82,7 +82,7 @@ if [ -f $WEBTREES_HOME/data/config.ini.php ]; then
   echo "Aligning base_url addon config"
   LINE=$(sed -n '/base_url/=' $WEBTREES_HOME/data/config.ini.php)
   sed -i "$LINE a "base_url=\"$BASE_URL\"" $WEBTREES_HOME/data/config.ini.php
-  sed -i "$LINEd" $WEBTREES_HOME/data/config.ini.php
+  sed -i "$LINE d "$WEBTREES_HOME/data/config.ini.php
 fi
 
 # Execute main script