diff --git a/releng/build-scripts/build/p2helper.xml b/releng/build-scripts/build/p2helper.xml
index 87805b1..ade2836 100644
--- a/releng/build-scripts/build/p2helper.xml
+++ b/releng/build-scripts/build/p2helper.xml
@@ -53,8 +53,6 @@
 	        classpath="${baseLocation}/plugins/${org.eclipse.equinox.launcher_jar}">
 	            <arg value="-consoleLog"/>
 	            <arg value="-nosplash"/>
-	    	    <arg value="-arch"/>
-	    	    <arg value="ppc64"/> <!-- FIXME -->
 	            <arg value="-application"/>
 	            <arg value="org.eclipse.equinox.p2.publisher.FeaturesAndBundlesPublisher" />
 	            <arg value="-source"/>
@@ -93,8 +91,6 @@
                 classpath="${targetEclipseDir}/plugins/${org.eclipse.equinox.launcher_jar}">
             <jvmarg value="-Declipse.p2.MD5Check=false" />
             <arg value="-consoleLog"/>
-            <arg value="-arch"/>
-            <arg value="ppc64"/> <!-- FIXME -->
             <arg value="-application"/>
             <arg value="org.eclipse.equinox.p2.director"/>
             <arg value="-metadataRepository" />
diff --git a/releng/build-scripts/build/run.xml b/releng/build-scripts/build/run.xml
index bb4ec70..8f699c0 100644
--- a/releng/build-scripts/build/run.xml
+++ b/releng/build-scripts/build/run.xml
@@ -80,7 +80,7 @@
 		<available file="${saxon.jar.path}" property="_hasSaxon.jar" />
 		
 		<!-- ant's os.arch is slightly different than osgi's arch -->
-		<condition property="arch" value="x86">
+		<condition property="arch" value="x86_64"> <!-- HACK: hard coding 64-bit architecture -->
 			<os arch="i386" />
 		</condition>
 		<condition property="arch" value="ppc64"> <!-- HACK: hard coding 64-bit architecture -->