diff --git a/service/middleware.go b/service/middleware.go
index 03f469c4..15d35a7d 100644
--- a/service/middleware.go
+++ b/service/middleware.go
@@ -39,8 +39,8 @@ func withStaticFileServer(c *gin.Context) {
 	}
 
 	// PWA app static file server
-	for root, length := range SpaRoots {
-		if length >= length && c.Request.URL.Path[0:length] == root {
+	for root, rootLength := range SpaRoots {
+		if rootLength >= length && c.Request.URL.Path[0:length] == root {
 			c.Request.URL.Path = strings.TrimPrefix(c.Request.URL.Path, root)
 			spaFileServers[root].ServeHTTP(c.Writer, c.Request)
 			c.Abort()