diff --git a/configs/nucleo-f303re/src/stm32_boot.c b/configs/nucleo-f303re/src/stm32_boot.c
index 6410d202d00..7456f4e8a41 100644
--- a/configs/nucleo-f303re/src/stm32_boot.c
+++ b/configs/nucleo-f303re/src/stm32_boot.c
@@ -86,11 +86,6 @@ void stm32_boardinitialize(void)
     }
 #endif
 
-#ifdef CONFIG_CANUTILS_LIBUAVCAN
-  (void)stm32_configgpio(GPIO_CAN1_RX);
-  (void)stm32_configgpio(GPIO_CAN1_TX);
-#endif
-
   /* Configure on-board LEDs if LED support has been selected. */
 
 #ifdef CONFIG_ARCH_LEDS
diff --git a/configs/nucleo-f303re/uavcan/defconfig b/configs/nucleo-f303re/uavcan/defconfig
deleted file mode 100644
index 38f830a3ecf..00000000000
--- a/configs/nucleo-f303re/uavcan/defconfig
+++ /dev/null
@@ -1,39 +0,0 @@
-# CONFIG_ARCH_FPU is not set
-# CONFIG_DEV_CONSOLE is not set
-# CONFIG_SERIAL is not set
-CONFIG_ARCH_BOARD_NUCLEO_F303RE=y
-CONFIG_ARCH_BOARD="nucleo-f303re"
-CONFIG_ARCH_BUTTONS=y
-CONFIG_ARCH_CHIP_STM32=y
-CONFIG_ARCH_CHIP_STM32F303RE=y
-CONFIG_ARCH_STACKDUMP=y
-CONFIG_ARCH="arm"
-CONFIG_BOARD_LOOPSPERMSEC=6522
-CONFIG_C99_BOOL8=y
-CONFIG_CANUTILS_LIBUAVCAN=y
-CONFIG_EXAMPLES_UAVCAN=y
-CONFIG_HAVE_CXX=y
-CONFIG_HAVE_CXXINITIALIZE=y
-CONFIG_IDLETHREAD_STACKSIZE=2048
-CONFIG_INTELHEX_BINARY=y
-CONFIG_LIBM=y
-CONFIG_MAX_TASKS=16
-CONFIG_MAX_WDOGPARMS=2
-CONFIG_MM_REGIONS=2
-CONFIG_NFILE_DESCRIPTORS=8
-CONFIG_NFILE_STREAMS=8
-CONFIG_PREALLOC_MQ_MSGS=4
-CONFIG_PREALLOC_TIMERS=4
-CONFIG_PREALLOC_WDOGS=8
-CONFIG_RAM_SIZE=65536
-CONFIG_RAM_START=0x20000000
-CONFIG_RAW_BINARY=y
-CONFIG_RR_INTERVAL=200
-CONFIG_SCHED_WAITPID=y
-CONFIG_SDCLONE_DISABLE=y
-CONFIG_START_DAY=27
-CONFIG_START_YEAR=2013
-CONFIG_STM32_JTAG_SW_ENABLE=y
-CONFIG_TASK_NAME_SIZE=0
-CONFIG_USER_ENTRYPOINT="uavcan_main"
-CONFIG_WDOG_INTRESERVE=1
diff --git a/configs/stm32f4discovery/src/stm32_boot.c b/configs/stm32f4discovery/src/stm32_boot.c
index dff5e62ca2a..bcb8317f3c1 100644
--- a/configs/stm32f4discovery/src/stm32_boot.c
+++ b/configs/stm32f4discovery/src/stm32_boot.c
@@ -99,15 +99,6 @@ void stm32_boardinitialize(void)
     }
 #endif
 
-#ifdef CONFIG_CANUTILS_LIBUAVCAN
-  (void)stm32_configgpio(GPIO_CAN1_RX);
-  (void)stm32_configgpio(GPIO_CAN1_TX);
-#  if CONFIG_LIBUAVCAN_STM32_NUM_IFACES > 1
-  (void)stm32_configgpio(GPIO_CAN2_RX);
-  (void)stm32_configgpio(GPIO_CAN2_TX);
-#  endif
-#endif
-
 #ifdef CONFIG_ARCH_LEDS
   /* Configure on-board LEDs if LED support has been selected. */
 
diff --git a/configs/stm32f4discovery/uavcan/defconfig b/configs/stm32f4discovery/uavcan/defconfig
deleted file mode 100644
index 91cbc57c45d..00000000000
--- a/configs/stm32f4discovery/uavcan/defconfig
+++ /dev/null
@@ -1,40 +0,0 @@
-# CONFIG_ARCH_FPU is not set
-# CONFIG_DEV_CONSOLE is not set
-# CONFIG_SERIAL is not set
-CONFIG_ARCH_BOARD_STM32F4_DISCOVERY=y
-CONFIG_ARCH_BOARD="stm32f4discovery"
-CONFIG_ARCH_BUTTONS=y
-CONFIG_ARCH_CHIP_STM32=y
-CONFIG_ARCH_CHIP_STM32F407VG=y
-CONFIG_ARCH_STACKDUMP=y
-CONFIG_ARCH="arm"
-CONFIG_BOARD_LOOPSPERMSEC=16717
-CONFIG_C99_BOOL8=y
-CONFIG_CANUTILS_LIBUAVCAN=y
-CONFIG_EXAMPLES_UAVCAN=y
-CONFIG_HAVE_CXX=y
-CONFIG_HAVE_CXXINITIALIZE=y
-CONFIG_INTELHEX_BINARY=y
-CONFIG_LIBM=y
-CONFIG_MAX_TASKS=16
-CONFIG_MAX_WDOGPARMS=2
-CONFIG_MM_REGIONS=2
-CONFIG_NFILE_DESCRIPTORS=8
-CONFIG_NFILE_STREAMS=8
-CONFIG_PREALLOC_MQ_MSGS=4
-CONFIG_PREALLOC_TIMERS=4
-CONFIG_PREALLOC_WDOGS=4
-CONFIG_RAM_SIZE=114688
-CONFIG_RAM_START=0x20000000
-CONFIG_RAMLOG_SYSLOG=y
-CONFIG_RAMLOG=y
-CONFIG_RAW_BINARY=y
-CONFIG_RR_INTERVAL=200
-CONFIG_SCHED_WAITPID=y
-CONFIG_SDCLONE_DISABLE=y
-CONFIG_START_DAY=6
-CONFIG_START_MONTH=12
-CONFIG_START_YEAR=2011
-CONFIG_STM32_JTAG_SW_ENABLE=y
-CONFIG_USER_ENTRYPOINT="uavcan_main"
-CONFIG_WDOG_INTRESERVE=0