diff --git a/mozilla/config/make-jars.pl b/mozilla/config/make-jars.pl
index 9155dd0065a..2c9f0347bd9 100644
--- a/mozilla/config/make-jars.pl
+++ b/mozilla/config/make-jars.pl
@@ -67,7 +67,10 @@ if ("$fileformat" ne "jar" &&
 
 my $zipmoveopt = "";
 if ("$fileformat" eq "jar") {
-    $zipmoveopt = "-m";
+    $zipmoveopt = "-m -0";
+}
+if ("$fileformat" eq "both") {
+    $zipmoveopt = "-0";
 }
 
 my $nofilelocks = 0;