diff --git a/include/asm-ia64/setup.h b/include/asm-ia64/setup.h
index ea29b57affcb..4399a44355b3 100644
--- a/include/asm-ia64/setup.h
+++ b/include/asm-ia64/setup.h
@@ -1,6 +1,6 @@
 #ifndef __IA64_SETUP_H
 #define __IA64_SETUP_H
 
-#define COMMAND_LINE_SIZE	512
+#define COMMAND_LINE_SIZE	2048
 
 #endif