diff --git a/build.xml b/build.xml
index 16ca7c32..c1dfea30 100644
--- a/build.xml
+++ b/build.xml
@@ -215,7 +215,7 @@
     </then>
     <else>
     <exec executable="tar" failonerror="true" dir="${output.folder}">
-      <arg value="acf"/>
+      <arg value="czf"/>
       <arg value="eclipse-paho-mqtt-c-${os.family}-incubation-${release.version}.tar.gz"/>
       <arg value="about.html"/>
       <arg value="notice.html"/>