diff --git a/target/linux/coldfire/Makefile b/target/linux/coldfire/Makefile
index 0d2963400fb..b9f96422af5 100644
--- a/target/linux/coldfire/Makefile
+++ b/target/linux/coldfire/Makefile
@@ -12,7 +12,6 @@ BOARDNAME:=Freescale Coldfire v4e
 FEATURES:=squashfs broken
 
 LINUX_VERSION:=2.6.25.20
-LINUX_KARCH:=m68k
 
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/mpc52xx/Makefile b/target/linux/mpc52xx/Makefile
index 35930bc2a9c..8e2a8cdaa60 100644
--- a/target/linux/mpc52xx/Makefile
+++ b/target/linux/mpc52xx/Makefile
@@ -12,7 +12,6 @@ BOARDNAME:=Freescale MPC52xx
 FEATURES:=tgz ext2
 
 LINUX_VERSION:=2.6.30.10
-LINUX_KARCH:=powerpc
 
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/mpc83xx/Makefile b/target/linux/mpc83xx/Makefile
index 838955b9135..96b379f09d7 100644
--- a/target/linux/mpc83xx/Makefile
+++ b/target/linux/mpc83xx/Makefile
@@ -12,7 +12,6 @@ BOARDNAME:=Freescale MPC83xx
 FEATURES:=tgz broken
 
 LINUX_VERSION:=2.6.30.10
-LINUX_KARCH:=powerpc
 
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/ppc40x/Makefile b/target/linux/ppc40x/Makefile
index 7bfe0b0d24c..910dccde3cf 100644
--- a/target/linux/ppc40x/Makefile
+++ b/target/linux/ppc40x/Makefile
@@ -13,7 +13,6 @@ FEATURES:=squashfs
 CFLAGS:=-Os -pipe -funit-at-a-time -mcpu=405
 
 LINUX_VERSION:=2.6.30.10
-LINUX_KARCH:=powerpc
 
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/ppc44x/Makefile b/target/linux/ppc44x/Makefile
index 8f8f2c6b7e7..5b536adafb0 100644
--- a/target/linux/ppc44x/Makefile
+++ b/target/linux/ppc44x/Makefile
@@ -13,7 +13,6 @@ FEATURES:=squashfs
 CFLAGS:=-Os -pipe -funit-at-a-time -mcpu=440
 
 LINUX_VERSION:=2.6.30.10
-LINUX_KARCH:=powerpc
 
 include $(INCLUDE_DIR)/target.mk