diff --git a/src/xercesc/runConfigure b/src/xercesc/runConfigure
index 49a6043dc82cddc36e486de4269df0f0248ef670..45dbb9f924c74c91c6e4a064faa3c366a7f8c672 100755
--- a/src/xercesc/runConfigure
+++ b/src/xercesc/runConfigure
@@ -394,8 +394,7 @@ if test $bitsToBuild = 64; then
               bitstobuildDefines=" $bitstobuildDefines -xarch=v9 "
               bitstobuildLink=" -xarch=v9 " ;;
            aix)
-              bitstobuildDefines=" $bitstobuildDefines -q64 -qwarn64 "
-              bitstobuildLink=" -X64 " ;;
+              bitstobuildDefines=" $bitstobuildDefines -q64 -qwarn64 " ;;
            hp-11)
               bitstobuildDefines=" $bitstobuildDefines +DA2.0W "
               bitstobuildLink=" +DA2.0W" ;;