diff --git a/panel_admin/includes/formAddPromotion.php b/panel_admin/includes/formAddPromotion.php
index ea5ec37..f566cc4 100644
--- a/panel_admin/includes/formAddPromotion.php
+++ b/panel_admin/includes/formAddPromotion.php
@@ -49,7 +49,7 @@ class formAddPromotion extends Form{
         $result = array();
         
 		$t = $this->test_input($datos['tittle']) ?? null;
-		$tittle = str_replace(" ", "_", $t);
+		$tittle = strtolower(str_replace(" ", "_", $t));
 
         if ( empty($tittle) ) {
             $result['tittle'] = "El título no es válido";
diff --git a/panel_admin/includes/formEditFilm.php b/panel_admin/includes/formEditFilm.php
index 0e2854b..3b17aaa 100644
--- a/panel_admin/includes/formEditFilm.php
+++ b/panel_admin/includes/formEditFilm.php
@@ -61,7 +61,7 @@ class formEditFilm extends Form{
 		}
 
         $t = $this->test_input($datos['tittle']) ?? null;
-		$tittle = str_replace(" ", "_", $t);
+		$tittle = strtolower(str_replace(" ", "_", $t));
 		//|| !mb_ereg_match(self::HTML5_EMAIL_REGEXP, $tittle) 
         if ( empty($tittle) ) {
             $result['tittle'] = "El título no es válido";
diff --git a/panel_admin/includes/formEditPromotion.php b/panel_admin/includes/formEditPromotion.php
index b195153..a030a79 100644
--- a/panel_admin/includes/formEditPromotion.php
+++ b/panel_admin/includes/formEditPromotion.php
@@ -58,7 +58,7 @@ class formEditPromotion extends Form{
 		}
 
 		$t = $this->test_input($datos['tittle']) ?? null;
-		$tittle = str_replace(" ", "_", $t);
+		$tittle = strtolower(str_replace(" ", "_", $t));
         if ( empty($tittle) ) {
             $result['tittle'] = "El título no es válido";
         }