diff --git a/c-busqueda/handler.cr b/c-busqueda/handler.cr
index 3348de5..b6cbb00 100644
--- a/c-busqueda/handler.cr
+++ b/c-busqueda/handler.cr
@@ -4,7 +4,7 @@ require "ishi/html"
 require "json"
 
 class Handler
-  def format_buffer(buffer, canvas_name, title)
+  def format_buffer(buffer, canvas_name, title = "")
     # Process the gnuplot output so it works in the page
     #
     # buffer is the Ishi output