diff --git a/headers/private/kernel/arch/ppc/thread_struct.h b/headers/private/kernel/arch/ppc/thread_struct.h
index 4113b4851a..e237ae78ae 100644
--- a/headers/private/kernel/arch/ppc/thread_struct.h
+++ b/headers/private/kernel/arch/ppc/thread_struct.h
@@ -14,4 +14,8 @@ struct arch_team {
 	// nothing here
 };
 
+struct arch_fork_arg {
+	// nothing here yet
+};
+
 #endif	/* KERNEL_ARCH_PPC_THREAD_STRUCT_H */