diff --git a/bindings/java/hyperic_jni/jni-build.xml b/bindings/java/hyperic_jni/jni-build.xml
index 00229756..3601e133 100644
--- a/bindings/java/hyperic_jni/jni-build.xml
+++ b/bindings/java/hyperic_jni/jni-build.xml
@@ -275,6 +275,7 @@ USA.
       <!-- HPUX -->
       <compiler name="hp"  if="hpux">
         <compilerarg value="+Z"/>
+        <compilerarg value="+DD64" if="jni.arch64"/>
 
         <defineset>
           <define name="${jni.define.name}_HPUX"/>
diff --git a/bindings/java/hyperic_jni/src/org/hyperic/jni/ArchName.java b/bindings/java/hyperic_jni/src/org/hyperic/jni/ArchName.java
index 8f31407b..662eb3a2 100644
--- a/bindings/java/hyperic_jni/src/org/hyperic/jni/ArchName.java
+++ b/bindings/java/hyperic_jni/src/org/hyperic/jni/ArchName.java
@@ -67,6 +67,9 @@ public class ArchName {
             }
             else {
                 arch = "pa";
+                if (is64()) {
+                    arch += "64";
+                }
             }
             if (version.indexOf("11") > -1) {
                 return arch + "-hpux-11";