diff --git a/stmhal/hal/src/stm32f4xx_hal_sd.c b/stmhal/hal/src/stm32f4xx_hal_sd.c
index 08be7f689b..5018f1b23c 100644
--- a/stmhal/hal/src/stm32f4xx_hal_sd.c
+++ b/stmhal/hal/src/stm32f4xx_hal_sd.c
@@ -1578,7 +1578,7 @@ HAL_SD_ErrorTypedef HAL_SD_Get_CardInfo(SD_HandleTypeDef *hsd, HAL_SD_CardInfoTy
     /* Byte 10 */
     tmp = (uint8_t)((hsd->CSD[2] & 0x0000FF00) >> 8);
     
-    pCardInfo->CardCapacity  = ((pCardInfo->SD_csd.DeviceSize + 1)) * 512 * 1024;
+    pCardInfo->CardCapacity  = ((pCardInfo->SD_csd.DeviceSize + 1ULL)) * 512 * 1024;
     pCardInfo->CardBlockSize = 512;    
   }
   else