diff --git a/os/hal/ports/STM32/STM32F0xx/stm32_registry.h b/os/hal/ports/STM32/STM32F0xx/stm32_registry.h
index a6176310f..4a7798258 100644
--- a/os/hal/ports/STM32/STM32F0xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F0xx/stm32_registry.h
@@ -732,14 +732,7 @@
 #define STM32_HAS_USART6                    FALSE
 
 /* USB attributes.*/
-#if defined(STM32F042x6)
-#define STM32_HAS_USB                       TRUE
-#define STM32_USB_ACCESS_SCHEME_2x16        TRUE
-#define STM32_USB_PMA_SIZE                  768
-#define STM32_USB_HAS_BCDR                  TRUE
-#else
 #define STM32_HAS_USB                       FALSE
-#endif
 #define STM32_HAS_OTG1                      FALSE
 #define STM32_HAS_OTG2                      FALSE
 
@@ -893,7 +886,10 @@
 #define STM32_UART_USART1_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 3)
 #define STM32_UART_USART1_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 2)
 
-#define STM32_HAS_USART2                    FALSE
+#define STM32_HAS_USART2                    TRUE
+#define STM32_UART_USART1_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 5)
+#define STM32_UART_USART1_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 4)
+
 #define STM32_HAS_USART3                    FALSE
 #define STM32_HAS_UART4                     FALSE
 #define STM32_HAS_UART5                     FALSE
diff --git a/os/hal/src/can.c b/os/hal/src/can.c
index 38a71873f..cfaa7264e 100644
--- a/os/hal/src/can.c
+++ b/os/hal/src/can.c
@@ -213,7 +213,7 @@ msg_t canReceive(CANDriver *canp,
                  systime_t timeout) {
 
   osalDbgCheck((canp != NULL) && (crfp != NULL) &&
-               (mailbox < (canmbx_t)CAN_RX_MAILBOXES));
+               (mailbox <= (canmbx_t)CAN_RX_MAILBOXES));
 
   osalSysLock();
   osalDbgAssert((canp->state == CAN_READY) || (canp->state == CAN_SLEEP),
diff --git a/readme.txt b/readme.txt
index 7aa182cc5..77ca21930 100644
--- a/readme.txt
+++ b/readme.txt
@@ -78,7 +78,10 @@
 - HAL: Introduced support for TIM21 and TIM22 in STM32 ST driver.
 - HAL: Updated STM32F0xx headers to STM32CubeF0 version 1.3.0. Added support
        for STM32F030xC, STM32F070x6, STM32F070xB devices.
-- HAL: Fixed wWrong EXTI[18] vector number on STM32F373 (bug #618)(backported
+- HAL: Fixed STM32F042 registry error (bug #620)(backported to 3.0.1).
+- HAL: Fixed wrong check in canReceive() (bug #619)(backported to 3.0.1
+       and 2.6.9).
+- HAL: Fixed wrong EXTI[18] vector number on STM32F373 (bug #618)(backported
        to 3.0.1 and 2.6.9).
 - HAL: Fixed wrong check on STM32_LSE_ENABLED definition in STM32L1xx HAL port
        (bug #617)(backported to 3.0.1 and 2.6.9).