diff -Nura iptables-1.3.7/Makefile iptables-1.3.7-sparc64/Makefile
--- iptables-1.3.7/Makefile	2006-12-04 08:16:01.000000000 -0300
+++ iptables-1.3.7-sparc64/Makefile	2007-02-13 23:01:09.000000000 -0300
@@ -65,7 +65,7 @@
 	32bituser := $(shell echo -e "\#include <stdio.h>\n\#if !defined(__sparcv9) && !defined(__arch64__) && !defined(_LP64)\nuserspace_is_32bit\n\#endif" | $(CC) $(CFLAGS) -E - | grep userspace_is_32bit)
 	ifdef 32bituser
 		# The kernel is 64-bit, even though userspace is 32.
-		CFLAGS+=-DIPT_MIN_ALIGN=8 -DKERNEL_64_USERSPACE_32
+		CFLAGS+=-DIPT_MIN_ALIGN=8
 	else
 		EXT_LDFLAGS+=-Wl,-m,elf64_sparc
 	endif