diff --git a/include/zephyr/kernel_version.h b/include/zephyr/kernel_version.h
index 6d3109fed30..7a21b437768 100644
--- a/include/zephyr/kernel_version.h
+++ b/include/zephyr/kernel_version.h
@@ -44,7 +44,7 @@ extern "C" {
  *
  * @return kernel version
  */
-extern uint32_t sys_kernel_version_get(void);
+uint32_t sys_kernel_version_get(void);
 
 /**
  * @}