diff --git a/Code/Framework/AzFramework/Platform/Mac/AzFramework/Process/ProcessWatcher_Mac.cpp b/Code/Framework/AzFramework/Platform/Mac/AzFramework/Process/ProcessWatcher_Mac.cpp
index 148b1cbdfe..4099443913 100644
--- a/Code/Framework/AzFramework/Platform/Mac/AzFramework/Process/ProcessWatcher_Mac.cpp
+++ b/Code/Framework/AzFramework/Platform/Mac/AzFramework/Process/ProcessWatcher_Mac.cpp
@@ -15,6 +15,7 @@
 
 #include <AzCore/base.h>
 #include <AzCore/IO/SystemFile.h>
+#include <AzCore/std/containers/fixed_vector.h>
 #include <AzCore/std/parallel/thread.h>
 #include <AzCore/std/smart_ptr/shared_ptr.h>