diff --git a/boards/avr/avrdx/breadxavr/src/Makefile b/boards/avr/avrdx/breadxavr/src/Makefile
index f5ef01580aa..da62b5457ca 100644
--- a/boards/avr/avrdx/breadxavr/src/Makefile
+++ b/boards/avr/avrdx/breadxavr/src/Makefile
@@ -22,16 +22,12 @@
 
 include $(TOPDIR)/Make.defs
 
-CSRCS = avrdx_boot.c
+CSRCS = avrdx_boot.c avrdx_init.c
 
 ifeq ($(CONFIG_ARCH_LEDS),y)
 CSRCS += avr_leds.c
 endif
 
-ifeq ($(CONFIG_BOARD_EARLY_INITIALIZE),y)
-CSRCS += avrdx_init.c
-endif
-
 ifeq ($(CONFIG_BREADXAVR_BUTTONS_DRIVER),y)
 CSRCS += avrdx_buttons.c
 endif
diff --git a/boards/avr/avrdx/breadxavr/src/avrdx_init.c b/boards/avr/avrdx/breadxavr/src/avrdx_init.c
index 6e09599e38f..096c1f9730b 100644
--- a/boards/avr/avrdx/breadxavr/src/avrdx_init.c
+++ b/boards/avr/avrdx/breadxavr/src/avrdx_init.c
@@ -89,3 +89,32 @@ void board_early_initialize(void)
 }
 
 #endif /* CONFIG_BOARD_EARLY_INITIALIZE */
+
+/****************************************************************************
+ * Name: board_late_initialize
+ *
+ * Description:
+ *   Excerpt from Kconfig:
+ *
+ *   If CONFIG_BOARD_LATE_INITIALIZE is set, board_late_initialize() is
+ *   called after up_initialize() just before the main application is
+ *   started. It can be used to initialize more complex, board-specific
+ *   device drivers.
+ *
+ *   Function runs on a temporary, internal kernel thread and can therefore
+ *   wait for events.
+ *
+ *   Currently, the board has no need for this function but the Kconfig
+ *   option is enabled by default so the function either needs to be defined,
+ *   or default configuration needs to be changed. This is why this function
+ *   exists but is empty.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+
+void board_late_initialize(void)
+{
+}
+
+#endif /* CONFIG_BOARD_LATE_INITIALIZE */