diff --git a/kernel/include/kthread.h b/kernel/include/kthread.h
index d6d1b629b99d3..e2505f65b3b96 100644
--- a/kernel/include/kthread.h
+++ b/kernel/include/kthread.h
@@ -225,7 +225,7 @@ static ALWAYS_INLINE bool should_preempt(struct k_thread *thread,
 }
 
 
-static inline bool z_is_idle_thread_entry(void *entry_point)
+static inline bool z_is_idle_thread_entry(k_thread_entry_t entry_point)
 {
 	return entry_point == idle;
 }