diff --git a/arch/arm/include/uapi/asm/setup.h b/arch/arm/include/uapi/asm/setup.h
index 345bf0a9a0ab..25ceda63b284 100644
--- a/arch/arm/include/uapi/asm/setup.h
+++ b/arch/arm/include/uapi/asm/setup.h
@@ -17,7 +17,7 @@
 
 #include <linux/types.h>
 
-#define COMMAND_LINE_SIZE 2048
+#define COMMAND_LINE_SIZE 1024
 
 /* The list ends with an ATAG_NONE node. */
 #define ATAG_NONE	0x00000000