diff --git a/modules/example/logger_hook_demo/src/glim/logger_hook_demo.cpp b/modules/example/logger_hook_demo/src/glim/logger_hook_demo.cpp
index 5a68733..5a9e61e 100644
--- a/modules/example/logger_hook_demo/src/glim/logger_hook_demo.cpp
+++ b/modules/example/logger_hook_demo/src/glim/logger_hook_demo.cpp
@@ -1,6 +1,5 @@
 #include <iostream>
 #include <spdlog/spdlog.h>
-#include <spdlog/sinks/callback_sink.h>
 #include <glim/util/logging.hpp>
 #include <glim/util/extension_module.hpp>