diff --git a/target/linux/atheros/patches/100-board.patch b/target/linux/atheros/patches/100-board.patch
index 8fb692c71..f1aa655f6 100644
--- a/target/linux/atheros/patches/100-board.patch
+++ b/target/linux/atheros/patches/100-board.patch
@@ -1,7 +1,7 @@
 diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
 --- linux.old/arch/mips/Kconfig	2007-02-02 23:55:52.912446784 +0100
 +++ linux.dev/arch/mips/Kconfig	2007-02-03 21:50:25.262027104 +0100
-@@ -45,6 +45,16 @@
+@@ -45,6 +45,15 @@
  	  note that a kernel built with this option selected will not be
  	  able to run on normal units.
  
@@ -11,7 +11,6 @@ diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
 +	select DMA_NONCOHERENT
 +	select IRQ_CPU
 +	select SYS_HAS_CPU_MIPS32_R1
-+	select HAVE_STD_PC_SERIAL_PORT
 +	select SYS_SUPPORTS_BIG_ENDIAN
 +	select SYS_SUPPORTS_32BIT_KERNEL
 +