diff --git a/arch/arm/src/stm32f7/stm32_sdmmc.c b/arch/arm/src/stm32f7/stm32_sdmmc.c
index 86481dd42f..11b7a2114f 100644
--- a/arch/arm/src/stm32f7/stm32_sdmmc.c
+++ b/arch/arm/src/stm32f7/stm32_sdmmc.c
@@ -1943,6 +1943,8 @@ static void stm32_clock(FAR struct sdio_dev_s *dev, enum sdio_clock_e rate)
             break;
           }
 
+      /* FALLTHROUGH */
+
       /* SD normal operation clocking (narrow 1-bit mode) */
 
       case CLOCK_SD_TRANSFER_1BIT: