diff --git a/board/amlogic/p200/README.nanopi-k2 b/board/amlogic/p200/README.nanopi-k2
index d450d3c2b2af..c8dec3569b4d 100644
--- a/board/amlogic/p200/README.nanopi-k2
+++ b/board/amlogic/p200/README.nanopi-k2
@@ -24,7 +24,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make nanopi-k2_defconfig
  > make
diff --git a/board/amlogic/p200/README.odroid-c2 b/board/amlogic/p200/README.odroid-c2
index bed48c5728ba..3b9f80df29d8 100644
--- a/board/amlogic/p200/README.odroid-c2
+++ b/board/amlogic/p200/README.odroid-c2
@@ -29,7 +29,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make odroid-c2_defconfig
  > make
diff --git a/board/amlogic/p200/README.p200 b/board/amlogic/p200/README.p200
index 01d82d1e79e3..84d5ca535691 100644
--- a/board/amlogic/p200/README.p200
+++ b/board/amlogic/p200/README.p200
@@ -31,7 +31,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make p200_defconfig
  > make
diff --git a/board/amlogic/p201/README.p201 b/board/amlogic/p201/README.p201
index c251096ce142..4bb5e9590532 100644
--- a/board/amlogic/p201/README.p201
+++ b/board/amlogic/p201/README.p201
@@ -31,7 +31,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make p201_defconfig
  > make
diff --git a/board/amlogic/p212/README.khadas-vim b/board/amlogic/p212/README.khadas-vim
index a2c7606454f8..ccf933861b79 100644
--- a/board/amlogic/p212/README.khadas-vim
+++ b/board/amlogic/p212/README.khadas-vim
@@ -30,7 +30,6 @@ Currently the u-boot port supports the following devices:
 U-Boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make khadas-vim_defconfig
  > make
diff --git a/board/amlogic/p212/README.libretech-ac b/board/amlogic/p212/README.libretech-ac
index 538604261b84..3f713ec32634 100644
--- a/board/amlogic/p212/README.libretech-ac
+++ b/board/amlogic/p212/README.libretech-ac
@@ -25,7 +25,6 @@ Currently the U-Boot port supports the following devices:
 U-Boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make libretech-ac_defconfig
  > make
diff --git a/board/amlogic/p212/README.libretech-cc b/board/amlogic/p212/README.libretech-cc
index 6af7de3cfa79..74434d4435ec 100644
--- a/board/amlogic/p212/README.libretech-cc
+++ b/board/amlogic/p212/README.libretech-cc
@@ -30,7 +30,6 @@ Currently the U-Boot port supports the following devices:
 U-Boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make libretech-cc_defconfig
  > make
diff --git a/board/amlogic/p212/README.p212 b/board/amlogic/p212/README.p212
index ef5370c763c4..3776f2449391 100644
--- a/board/amlogic/p212/README.p212
+++ b/board/amlogic/p212/README.p212
@@ -31,7 +31,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make p212_defconfig
  > make
diff --git a/board/amlogic/q200/README.khadas-vim2 b/board/amlogic/q200/README.khadas-vim2
index 8bcfc296f3e0..595998c4fabb 100644
--- a/board/amlogic/q200/README.khadas-vim2
+++ b/board/amlogic/q200/README.khadas-vim2
@@ -31,7 +31,6 @@ Currently the u-boot port supports the following devices:
 U-Boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make khadas-vim2_defconfig
  > make
diff --git a/board/amlogic/q200/README.q200 b/board/amlogic/q200/README.q200
index 55d730a0d200..d4142c88bd42 100644
--- a/board/amlogic/q200/README.q200
+++ b/board/amlogic/q200/README.q200
@@ -30,7 +30,6 @@ Currently the u-boot port supports the following devices:
 U-Boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make khadas-vim2_defconfig
  > make
diff --git a/board/amlogic/s400/README b/board/amlogic/s400/README
index ab21998dc836..a48db22a4282 100644
--- a/board/amlogic/s400/README
+++ b/board/amlogic/s400/README
@@ -31,7 +31,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make s400_defconfig
  > make
diff --git a/board/amlogic/sei510/README b/board/amlogic/sei510/README
index e47ebc7b3a5a..d9358aa50183 100644
--- a/board/amlogic/sei510/README
+++ b/board/amlogic/sei510/README
@@ -22,7 +22,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make sei510_defconfig
  > make
diff --git a/board/amlogic/sei610/README b/board/amlogic/sei610/README
index 1cc2b3c2a4e9..d96a94b5e970 100644
--- a/board/amlogic/sei610/README
+++ b/board/amlogic/sei610/README
@@ -18,7 +18,6 @@ specifications:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make sei610_defconfig
  > make
diff --git a/board/amlogic/u200/README b/board/amlogic/u200/README
index bffac5e7ae0a..a4080eb299c4 100644
--- a/board/amlogic/u200/README
+++ b/board/amlogic/u200/README
@@ -27,7 +27,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make u200_defconfig
  > make
diff --git a/board/amlogic/w400/README.khadas-vim3 b/board/amlogic/w400/README.khadas-vim3
index 45ef90c1b0a9..399bf49295f6 100644
--- a/board/amlogic/w400/README.khadas-vim3
+++ b/board/amlogic/w400/README.khadas-vim3
@@ -29,7 +29,6 @@ Currently the U-Boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make khadas-vim3_defconfig
  > make
diff --git a/board/amlogic/w400/README.khadas-vim3l b/board/amlogic/w400/README.khadas-vim3l
index 0afff16c0c26..b2d9abbfd9b2 100644
--- a/board/amlogic/w400/README.khadas-vim3l
+++ b/board/amlogic/w400/README.khadas-vim3l
@@ -29,7 +29,6 @@ Currently the U-Boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make khadas-vim3l_defconfig
  > make
diff --git a/board/amlogic/w400/README.odroid-n2 b/board/amlogic/w400/README.odroid-n2
index a8f2c3d7daa6..8142eebea007 100644
--- a/board/amlogic/w400/README.odroid-n2
+++ b/board/amlogic/w400/README.odroid-n2
@@ -28,7 +28,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make odroid-n2_defconfig
  > make
diff --git a/board/amlogic/w400/README.w400 b/board/amlogic/w400/README.w400
index 25b786d817c4..c129717a1189 100644
--- a/board/amlogic/w400/README.w400
+++ b/board/amlogic/w400/README.w400
@@ -27,7 +27,6 @@ Currently the u-boot port supports the following devices:
 u-boot compilation
 ==================
 
- > export ARCH=arm
  > export CROSS_COMPILE=aarch64-none-elf-
  > make w400_defconfig
  > make
