diff --git a/configs/stm32f429i-disco/src/stm32_lcd.c b/configs/stm32f429i-disco/src/stm32_lcd.c
index 96b47e38119..3a79300422c 100644
--- a/configs/stm32f429i-disco/src/stm32_lcd.c
+++ b/configs/stm32f429i-disco/src/stm32_lcd.c
@@ -530,7 +530,7 @@ int board_lcd_initialize(void)
 int up_fbinitialize(int display)
 {
   static bool initialized = false;
-  int ret;
+  int ret = OK;
 
   if (!initialized)
     {