diff --git a/rootfs/etc/s6-overlay/startup.d/04-tar1090-configure b/rootfs/etc/s6-overlay/startup.d/04-tar1090-configure
index 8db0eb9..ab4561a 100755
--- a/rootfs/etc/s6-overlay/startup.d/04-tar1090-configure
+++ b/rootfs/etc/s6-overlay/startup.d/04-tar1090-configure
@@ -177,7 +177,7 @@ if [[ -n "$TAR1090_LABELZOOMGROUND" ]]; then
 fi
 
 if chk_enabled "$TAR1090_USEROUTEAPI"; then
-  echo "useRouteAPI = ${TAR1090_USEROUTEAPI};"
+  echo "useRouteAPI = true;"
 fi
 
 if [[ -n "$TAR1090_ROUTEAPIURL" ]]; then