diff --git a/External/FEXCore/include/FEXCore/Core/SignalDelegator.h b/External/FEXCore/include/FEXCore/Core/SignalDelegator.h
index 45b2a1b7f..87037fa59 100644
--- a/External/FEXCore/include/FEXCore/Core/SignalDelegator.h
+++ b/External/FEXCore/include/FEXCore/Core/SignalDelegator.h
@@ -8,6 +8,7 @@
 #include <utility>
 #include <signal.h>
 #include <stddef.h>
+#include <vector>
 
 namespace FEXCore {
 namespace Core {