diff --git a/build.xml b/build.xml
index e51397fe..17510ff3 100644
--- a/build.xml
+++ b/build.xml
@@ -214,9 +214,10 @@
 	<target name="appbundle" description="Build an OSX application bundle">
 		<taskdef name="bundleapp" classname="com.oracle.appbundler.AppBundlerTask" classpath="${dir.lib}/build/appbundler.jar" />
 
-		<bundleapp outputdirectory="${dir.dist}" name="${title}" displayname="${title}" shortversion="${version}" identifier="net.sourceforge.FileBot" mainclassname="net.filebot.Main" icon="${dir.installer}/appbundle/filebot.icns" copyright="2014 Reinhard Pointner" applicationcategory="public.app-category.productivity">
+		<bundleapp minimumsystemversion="10.8" outputdirectory="${dir.dist}" name="${title}" displayname="${title}" shortversion="${version}" identifier="net.sourceforge.FileBot" mainclassname="net.filebot.Main" icon="${dir.installer}/appbundle/filebot.icns" copyright="2014 Reinhard Pointner" applicationcategory="public.app-category.productivity">
 			<classpath file="${path.fatjar}" />
 			<librarypath dir="${dir.lib}/native/mac-x86_64" />
+			<arch name="x86_64" />
 
 			<option value="-Dapplication.deployment=app" />
 			<option value="-Dapplication.update=auto" />
@@ -263,7 +264,7 @@
 		<property name="jre.version" value="jdk1.8.0_20.jdk" />
 		<property name="jre.path" value="/Library/Java/JavaVirtualMachines/${jre.version}/Contents/Home" />
 
-		<bundleapp executablename="FileBotAppLauncher" version="${svn.revision}" outputdirectory="${dir.dist}" name="${title}" displayname="${title}" shortversion="${version}" identifier="net.filebot.FileBot" mainclassname="net.filebot.Main" icon="${dir.installer}/appbundle/filebot.icns" copyright="2014 Reinhard Pointner" applicationcategory="public.app-category.productivity">
+		<bundleapp minimumsystemversion="10.8" executablename="FileBotAppLauncher" version="${svn.revision}" outputdirectory="${dir.dist}" name="${title}" displayname="${title}" shortversion="${version}" identifier="net.filebot.FileBot" mainclassname="net.filebot.Main" icon="${dir.installer}/appbundle/filebot.icns" copyright="2014 Reinhard Pointner" applicationcategory="public.app-category.productivity">
 			<classpath file="${path.fatjar}" />
 			<librarypath dir="${dir.lib}/native/mac-x86_64" />
 			<arch name="x86_64" />
@@ -295,17 +296,11 @@
 			<option value="-Djna.boot.library.path=$APP_ROOT/Contents/MacOS" />
 			<option value="-Djna.library.path=$APP_ROOT/Contents/MacOS" />
 			<option value="-Djava.library.path=$APP_ROOT/Contents/MacOS" />
-
 			<option value="-Dnet.filebot.AcoustID.fpcalc=$APP_ROOT/Contents/MacOS/fpcalc" />
 
 			<option value="-Xdock:name=${title}" />
 			<option value="-Xdock:icon=Contents/Resources/filebot.icns" />
 			<option value="-Dapple.laf.useScreenMenuBar=true" />
-
-			<argument value="--log-file" />
-			<argument value="filebot.log" />
-			<argument value="--log-lock" />
-			<argument value="false" />
 		</bundleapp>
 
 		<!-- fix code signing and submission issues -->