diff --git a/TargetGroup.cc b/TargetGroup.cc
index 2d75bf8d3..1686ff3e0 100644
--- a/TargetGroup.cc
+++ b/TargetGroup.cc
@@ -548,8 +548,13 @@ static void ipv6_or_mask(struct in6_addr *a, const struct in6_addr *mask, const
 }
 
 void NetBlockIPv6Netmask::apply_netmask(int bits) {
+#ifdef _AIX
+  const struct in6_addr zeros = { { { 0x00, 0x00, 0x00, 0x00 } } };
+  const struct in6_addr ones = { { { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff } } };
+#else
   const struct in6_addr zeros = { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} } };
   const struct in6_addr ones = { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff} } };
+#endif
   struct in6_addr mask;
 
   if (bits > 128)