diff --git a/bird/bird.conf.tmpl b/bird/bird.conf.tmpl
index d36a509..22a8199 100644
--- a/bird/bird.conf.tmpl
+++ b/bird/bird.conf.tmpl
@@ -93,7 +93,7 @@ function is_own_route_v4()
 
 function is_wireguard_route_v4()
 {
-    {{ if len "${wg_routes:-}" }}{{ range "$wg_routes" | split "," }}if net ~ [ {{.}} ] then return true;
+    {{ if len "${wg_routes:-}" }}{{ range "$wg_routes" | split "," }}if net ~ [ {{.}}+ ] then return true;
     {{ end }}{{ end }}
     return false;
 }