diff --git a/build.xml b/build.xml
index a4be6b9c..b4ed8eff 100644
--- a/build.xml
+++ b/build.xml
@@ -156,6 +156,7 @@
     <delete dir="${deploy.dir}/classes"/>
     <delete dir="${deploy.dir}/docs"/>
     <delete failonerror="false"><fileset dir="${deploy.dir}" includes="*.jar"/></delete>
+    <delete failonerror="false"><fileset dir="${deploy.dir}" includes="*.swc"/></delete>
   </target>
 
   <!-- wipes the entire build directory clean -->
@@ -187,7 +188,7 @@
   <target name="checkaslib">
     <condition property="no_build_aslib"><or>
       <not><available file="${flexsdk.dir}/lib/compc.jar"/></not>
-      <uptodate targetfile="${deploy.dir}/${lib.name}.swc">
+      <uptodate targetfile="${deploy.dir}/${lib.name}lib.swc">
         <srcfiles dir="src/as" includes="**/*.as"/>
       </uptodate>
     </or></condition>
@@ -208,7 +209,7 @@
       <arg value="-compiler.source-path=src/as/"/>
       <arg value="-include-sources=src/as/"/>
       <arg value="-output"/>
-      <arg value="${deploy.dir}/${lib.name}.swc"/>
+      <arg value="${deploy.dir}/${lib.name}lib.swc"/>
     </java>
     <delete file="${deploy.dir}/aslib-config.xml"/>
   </target>