diff --git a/include/utils/socket.hpp b/include/utils/socket.hpp
index d0b1887e..96f36a4f 100644
--- a/include/utils/socket.hpp
+++ b/include/utils/socket.hpp
@@ -40,9 +40,9 @@ namespace socket_util {
    *   conn->receive(...);
    * \endcode
    */
-  auto make_unix_connection = [](string&& path) -> unique_ptr<unix_connection> {
+  inline unique_ptr<unix_connection> make_unix_connection(string&& path) {
     return factory_util::unique<unix_connection>(forward<string>(path));
-  };
+  }
 }
 
 POLYBAR_NS_END