diff --git a/src/test/check-install b/src/test/check-install
index 6bb11c264..510915cc7 100755
--- a/src/test/check-install
+++ b/src/test/check-install
@@ -21,7 +21,7 @@ for script in "${scripts[@]}"; do
 done
 
 if [[ ${#missing_scripts[@]} -gt 0 ]]; then
-    echo "The following script(s) have no sudo access: ${missing_scripts[*]} . Try 'sudo -n ${missing_scripts[0]} --check'"
+    echo "The following script(s) have no sudo access: ${missing_scripts[*]} . Try 'BOX_ENV=test sudo -k -n ${missing_scripts[0]} --check'"
     echo -e "\nYou have to add the lines below to /etc/sudoers.d/yellowtent\n\n"
  
     for missing_script in "${missing_scripts[@]}"; do