diff --git a/src/mergerfs_webui.cpp b/src/mergerfs_webui.cpp
index 5db74ca9..1e03051c 100644
--- a/src/mergerfs_webui.cpp
+++ b/src/mergerfs_webui.cpp
@@ -17,8 +17,6 @@ using json = nlohmann::json;
 
 static std::string g_password = "";
 
-static bool _check_auth(const httplib::Request &req_);
-
 static
 bool
 _validate_password(const std::string &password_provided_)