diff --git a/bindings/java/hyperic_jni/jni-build.xml b/bindings/java/hyperic_jni/jni-build.xml
index bf2e3e10..0172b1d1 100644
--- a/bindings/java/hyperic_jni/jni-build.xml
+++ b/bindings/java/hyperic_jni/jni-build.xml
@@ -449,6 +449,7 @@ USA.
 
       <!-- AIX -->
       <compiler name="xlc_r" if="aix">
+        <compilerarg value="-q64" if="jni.arch64"/>
         <defineset>
           <define name="${jni.define.name}_AIX"/>
           <define name="_ALL_SOURCE"/>
@@ -458,6 +459,7 @@ USA.
       </compiler>
 
       <linker name="xlc_r" if="aix">
+        <linkerarg value="-b64" if="jni.arch64"/>
         <libset if="jni.libset.libs"
                 dir="${jni.libset.dir}"
                 libs="${jni.libset.libs}"/>