diff --git a/board/beacon/imx8mm/README b/board/beacon/imx8mm/README
index 4223fbd15d..dce176fa0b 100644
--- a/board/beacon/imx8mm/README
+++ b/board/beacon/imx8mm/README
@@ -26,7 +26,7 @@ $ cp firmware-imx-8.5/firmware/ddr/synopsys/lpddr4*.bin $(srctree)
 Build U-Boot
 ============
 $ make imx8mm_beacon_defconfig
-$ make flash.bin ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- ATF_LOAD_ADDR=0x920000
+$ make flash.bin CROSS_COMPILE=aarch64-linux-gnu- ATF_LOAD_ADDR=0x920000
 
 Burn U-Boot to microSD Card
 ===========================
diff --git a/board/logicpd/imx6/README b/board/logicpd/imx6/README
index 26d053a32c..19f79c5734 100644
--- a/board/logicpd/imx6/README
+++ b/board/logicpd/imx6/README
@@ -17,7 +17,7 @@ Building U-Boot for Logic PD Development Kit
 To build U-Boot for the Dual and Quad variants:
 
  make imx6q_logic_defconfig
- make u-boot.imx ARCH=arm CROSS_COMPILE=arm-linux-
+ make u-boot.imx CROSS_COMPILE=arm-linux-
 
 
 Flashing U-Boot into the SD card
diff --git a/board/technexion/pico-imx7d/README.pico-imx7d_BL33 b/board/technexion/pico-imx7d/README.pico-imx7d_BL33
index 40324ffe5f..1b346093b8 100644
--- a/board/technexion/pico-imx7d/README.pico-imx7d_BL33
+++ b/board/technexion/pico-imx7d/README.pico-imx7d_BL33
@@ -4,7 +4,7 @@ The boot sequence is ATF -> OPTEE -> U-Boot -> Linux. U-Boot is in non-secure
 world in this case.
 
 - Build u-boot
-    Set environment variable of CROSS_COMPILE for your toolchain and ARCH=arm
+    Set environment variable of CROSS_COMPILE for your toolchain
     $ make pico-imx7d_bl33_defconfig
     $ make all
 
diff --git a/doc/board/toradex/colibri_imx7.rst b/doc/board/toradex/colibri_imx7.rst
index 6fb9526666..a30e721379 100644
--- a/doc/board/toradex/colibri_imx7.rst
+++ b/doc/board/toradex/colibri_imx7.rst
@@ -18,7 +18,6 @@ Build U-Boot
 .. code-block:: bash
 
     $ export CROSS_COMPILE=arm-linux-gnueabi-
-    $ export ARCH=arm
     $ make colibri_imx7_emmc_defconfig # For NAND: colibri_imx7_defconfig
     $ make