diff --git a/arch/arm/src/stm32/stm32_ltdc.c b/arch/arm/src/stm32/stm32_ltdc.c
index bd27ee1f0e3..9f23acb4655 100644
--- a/arch/arm/src/stm32/stm32_ltdc.c
+++ b/arch/arm/src/stm32/stm32_ltdc.c
@@ -276,7 +276,7 @@ struct stm32_ltdc_s
 
   /* Debug stuff */
 
-#ifdef CONFIG_STM32_LtDC_REGDEBUG
+#ifdef CONFIG_STM32_LTDC_REGDEBUG
    bool wrlast;                   /* True: Last access was a write */
    uintptr_t addrlast;            /* Last address accessed */
    uint32_t vallast;              /* Last value read or written */