diff --git a/data/helpers.d/nodejs b/data/helpers.d/nodejs
index 7ba692f96..75472c278 100644
--- a/data/helpers.d/nodejs
+++ b/data/helpers.d/nodejs
@@ -126,7 +126,7 @@ ynh_install_nodejs () {
     test -x /usr/bin/npm && mv /usr/bin/npm /usr/bin/npm_n
 
     # If n is not previously setup, install it
-    if ! test $(n --version > /dev/null 2>&1)
+    if ! $n_install_dir/bin/n --version > /dev/null 2>&1
     then
         ynh_install_n
     elif dpkg --compare-versions "$($n_install_dir/bin/n --version)" lt $n_version