diff --git a/stdio.hpp b/stdio.hpp
index fe1eed8678dfe562a951363842ee99658b0ea22f..54e05551bd47890297b227eead29f282cfb0e51c 100644
--- a/stdio.hpp
+++ b/stdio.hpp
@@ -189,7 +189,7 @@ namespace rlib {
         return println(std::cout, std::forward<Args>(args) ...);
     }
     template <>
-    void println() {
+    inline void println() {
         return println(std::cout);
     }
     template <typename... Args>