diff --git a/extra/python/build b/extra/python/build
index c7f275df..7ced09e1 100755
--- a/extra/python/build
+++ b/extra/python/build
@@ -22,4 +22,4 @@ ln -s python3 "$1/usr/bin/python"
 ln -s pip3    "$1/usr/bin/pip"
 
 # Make static library writable.
-chmod -v u+w "$1/usr/lib/libpython"*
+chmod u+w "$1/usr/lib/libpython"*