diff --git a/connector/tableau/looker-jdbc/connectionFields.xml b/connector/tableau/looker-jdbc/connectionFields.xml
index bcb29662f84..d6da06debf8 100644
--- a/connector/tableau/looker-jdbc/connectionFields.xml
+++ b/connector/tableau/looker-jdbc/connectionFields.xml
@@ -19,7 +19,7 @@
 <!-- Connection fields, part of the Tableau connector SDK; see manifest.xml. -->
 <connection-fields>
   <field name="server" label="Server" value-type="string" category="endpoint" default-value="localhost">
-    <validation-rule reg-exp="^(([a-zA-Z]|[a-zA-Z][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z]|[A-Za-z][A-Za-z0-9\-]*[A-Za-z0-9])$"/>
+    <validation-rule reg-exp="^[a-zA-Z0-9\.\-]*$"/>
   </field>
 
   <field name="authentication" label="Authentication" category="authentication" value-type="selection" default-value="auth-user-pass" >