diff --git a/plugins/python-build/bin/python-build b/plugins/python-build/bin/python-build
index 9bc40607..0e7306eb 100755
--- a/plugins/python-build/bin/python-build
+++ b/plugins/python-build/bin/python-build
@@ -504,7 +504,7 @@ download_tarball() {
 }
 
 has_tar_xz_support() {
-  tar Jc /dev/null 1>/dev/null 2>&1
+  tar Jcf - /dev/null 1>/dev/null 2>&1
 }
 
 fetch_git() {