diff --git a/Source/Tests/LinuxSyscalls/x64/Types.h b/Source/Tests/LinuxSyscalls/x64/Types.h
index f3e0083fe..9370a06b6 100644
--- a/Source/Tests/LinuxSyscalls/x64/Types.h
+++ b/Source/Tests/LinuxSyscalls/x64/Types.h
@@ -8,6 +8,7 @@ $end_info$
 
 #include <FEXCore/Utils/CompilerDefs.h>
 
+#include <linux/types.h>
 #include <asm/ipcbuf.h>
 #include <asm/posix_types.h>
 #include <asm/sembuf.h>