diff --git a/servehelper.cpp b/servehelper.cpp
index 1a613b8..1889d71 100644
--- a/servehelper.cpp
+++ b/servehelper.cpp
@@ -107,8 +107,8 @@ bool starts_with(const CurlUrl& url, const CurlUrl& base) {
     CurlStr url_path = url.get(CURLUPART_PATH);
     CurlStr base_path = base.get(CURLUPART_PATH);
     size_t base_path_len = strlen(base_path.get());
-    return memcpy(url_path.get(), base_path.get(), base_path_len) == 0
-        && (url_path.get()[base_path_len] == '/' || url_path.get()[base_path_len] == '\0');
+    return memcmp(url_path.get(), base_path.get(), base_path_len) == 0
+        && (base_path.get()[base_path_len - 1] == '/' || url_path.get()[base_path_len] == '/' || url_path.get()[base_path_len] == '\0');
 }
 
 std::string get_origin(const httplib::Request& req) {