diff --git a/bin/kaleidoscope-builder b/bin/kaleidoscope-builder
index 90117571..9be38507 100755
--- a/bin/kaleidoscope-builder
+++ b/bin/kaleidoscope-builder
@@ -32,6 +32,7 @@ find_sketch () {
             return
         fi
     done
+        echo "Couldn't find sketch (.ino file)" >&2
     exit 1
 }