diff --git a/base/threadpool.hpp b/base/threadpool.hpp
index 3f1b98c5..e5dc1476 100644
--- a/base/threadpool.hpp
+++ b/base/threadpool.hpp
@@ -11,6 +11,7 @@
 #include <queue>
 #include <mutex>
 #include <condition_variable>
+#include <functional>
 
 // make_unique is not available in C++11
 // Taken from Herb Sutter's blog (https://herbsutter.com/gotw/_102/)
@@ -117,4 +118,4 @@ namespace vks
 		}
 	};
 
-}
\ No newline at end of file
+}