diff --git a/src/core/linker.cpp b/src/core/linker.cpp
index 1345a188..ab35ae04 100644
--- a/src/core/linker.cpp
+++ b/src/core/linker.cpp
@@ -24,6 +24,7 @@
 
 #include <set>
 #include <cinttypes>
+#include <functional>
 
 
 namespace Core {