diff --git a/usr/bin/sandbox-app-launcher b/usr/bin/sandbox-app-launcher
index 740e751..7442d31 100755
--- a/usr/bin/sandbox-app-launcher
+++ b/usr/bin/sandbox-app-launcher
@@ -112,7 +112,7 @@ setup() {
   fi
 
   if ! getent passwd | sed -e 's/:.*//g' | grep -qw "${app_user}"; then
-    adduser --no-create-home --disabled-login --gecos "" "${app_user}"
+    adduser --no-create-home --disabled-login --gecos "" "${app_user}" >/dev/null
   fi
 
   if ! [ -d "${app_homedir}" ]; then