diff --git a/tools/setup b/tools/setup
index 866664e6..6db4c6c5 100755
--- a/tools/setup
+++ b/tools/setup
@@ -51,4 +51,4 @@ if [ $docbook = 1 ] ; then
 fi
 
 # Untar libtap
-( cd external && tar --gzip -xf tap-1.01-nagios-plugins.tar.gz )
+( cd external && gunzip -c tap-1.01-nagios-plugins.tar.gz | tar -xf - )