diff --git a/include/zephyr/kernel/internal/smp.h b/include/zephyr/kernel/internal/smp.h
index 58576201329..e2b3ae15aec 100644
--- a/include/zephyr/kernel/internal/smp.h
+++ b/include/zephyr/kernel/internal/smp.h
@@ -6,7 +6,6 @@
 #ifndef ZEPHYR_INCLUDE_KERNEL_INTERNAL_SMP_H_
 #define ZEPHYR_INCLUDE_KERNEL_INTERNAL_SMP_H_
 
-void z_init_cpu(int id);
 void z_sched_ipi(void);
 
 #endif
diff --git a/kernel/include/kernel_internal.h b/kernel/include/kernel_internal.h
index 711313b5ce7..16efb3b54e8 100644
--- a/kernel/include/kernel_internal.h
+++ b/kernel/include/kernel_internal.h
@@ -24,6 +24,9 @@
 extern "C" {
 #endif
 
+/* Initialize per-CPU kernel data */
+void z_init_cpu(int id);
+
 /* Initialize a thread */
 void z_init_thread_base(struct _thread_base *thread_base, int priority,
 			uint32_t initial_state, unsigned int options);