diff --git a/addons/web/static/src/xml/base.xml b/addons/web/static/src/xml/base.xml
index 8478ffeda22..511e37f4ab4 100644
--- a/addons/web/static/src/xml/base.xml
+++ b/addons/web/static/src/xml/base.xml
@@ -120,7 +120,7 @@
                     </tr>
                     <tr>
                         <td><label for="db_name">New database name:</label></td>
-                        <td><input type="text" name="db_name" class="required" matches="^[a-zA-Z][a-zA-Z0-9_]+$" autofocus="true"/></td>
+                        <td><input type="text" name="db_name" class="required" matches="^[a-zA-Z][a-zA-Z0-9_-]+$" autofocus="true"/></td>
                     </tr>
                     <tr>
                         <td><label for="demo_data">Load Demonstration data:</label></td>