diff --git a/doc/faqs/how-to-install-composer-programmatically.md b/doc/faqs/how-to-install-composer-programmatically.md
index 3b378a5ab..6299b6d40 100644
--- a/doc/faqs/how-to-install-composer-programmatically.md
+++ b/doc/faqs/how-to-install-composer-programmatically.md
@@ -9,7 +9,7 @@ An alternative is to use this script which only works with UNIX utilities:
 ```bash
 #!/bin/sh
 
-EXPECTED_CHECKSUM="$(wget -q -O - https://composer.github.io/installer.sig)"
+EXPECTED_CHECKSUM="$(php -r 'copy("https://composer.github.io/installer.sig", "php://stdout");')"
 php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
 ACTUAL_CHECKSUM="$(php -r "echo hash_file('sha384', 'composer-setup.php');")"