diff --git a/ports/mimxrt/boards/ADAFRUIT_METRO_M7/mpconfigboard.mk b/ports/mimxrt/boards/ADAFRUIT_METRO_M7/mpconfigboard.mk
index b9c1716a7f60c..520cea063fb7e 100644
--- a/ports/mimxrt/boards/ADAFRUIT_METRO_M7/mpconfigboard.mk
+++ b/ports/mimxrt/boards/ADAFRUIT_METRO_M7/mpconfigboard.mk
@@ -4,7 +4,7 @@ MCU_VARIANT = MIMXRT1011DAE5A
 MICROPY_FLOAT_IMPL = single
 MICROPY_HW_FLASH_TYPE ?= qspi_nor_flash
 MICROPY_HW_FLASH_SIZE ?= 0x800000  # 8MB
-MICROPY_HW_FLASH_CLK = kFlexSpiSerialClk_133MHz
+MICROPY_HW_FLASH_CLK = kFlexSpiSerialClk_100MHz
 MICROPY_HW_FLASH_QE_CMD = 0x31
 MICROPY_HW_FLASH_QE_ARG = 0x02