diff --git a/boards/arm/stm32/stm32f429i-disco/src/stm32_bringup.c b/boards/arm/stm32/stm32f429i-disco/src/stm32_bringup.c
index 5208cd8e4a9..0ff651dde59 100644
--- a/boards/arm/stm32/stm32f429i-disco/src/stm32_bringup.c
+++ b/boards/arm/stm32/stm32f429i-disco/src/stm32_bringup.c
@@ -66,6 +66,10 @@
 #include "stm32.h"
 #include "stm32f429i-disco.h"
 
+#ifdef CONFIG_INPUT_BUTTONS_LOWER
+#  include <nuttx/input/buttons.h>
+#endif
+
 #ifdef CONFIG_SENSORS_L3GD20
 #include "stm32_l3gd20.h"
 #endif
@@ -345,6 +349,16 @@ int stm32_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_INPUT_BUTTONS_LOWER
+  /* Register the BUTTON driver */
+
+  ret = btn_lower_initialize("/dev/buttons");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
+    }
+#endif /* CONFIG_INPUT_BUTTONS_LOWER */
+
 #ifdef CONFIG_INPUT_STMPE811
   /* Initialize the touchscreen */