diff --git a/main.sh b/main.sh
index 8e50662..6080608 100755
--- a/main.sh
+++ b/main.sh
@@ -27,6 +27,7 @@ built_or_system () {
 
   elif exe=$(which "$2"); then
     echo "$exe" # stdout
+    echo "$exe" >&2
 
   else
     echo " ** $2: not found neither built nor in-system" >&2 # stderr