diff --git a/11/postgres-tomcat/xwiki/hibernate.cfg.xml b/11/postgres-tomcat/xwiki/hibernate.cfg.xml
index e8915631cfe0ac293be4dcd22251fc69b4a9e256..586d462e1753c02150258fcabbd98d37e3c38c1e 100644
--- a/11/postgres-tomcat/xwiki/hibernate.cfg.xml
+++ b/11/postgres-tomcat/xwiki/hibernate.cfg.xml
@@ -91,7 +91,6 @@
     <property name="connection.username">replaceuser</property>
     <property name="connection.password">replacepassword</property>
     <property name="connection.driver_class">org.postgresql.Driver</property>
-    <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
     <property name="jdbc.use_streams_for_binary">false</property>
     <property name="xwiki.virtual_mode">schema</property>
 
diff --git a/12/postgres-tomcat/xwiki/hibernate.cfg.xml b/12/postgres-tomcat/xwiki/hibernate.cfg.xml
index 348d39850be10a0c1e0f3c7cbce829ff4b7c4525..f0c065d626c4ad83725e7cb122462bc4fe7ff6e6 100644
--- a/12/postgres-tomcat/xwiki/hibernate.cfg.xml
+++ b/12/postgres-tomcat/xwiki/hibernate.cfg.xml
@@ -91,7 +91,6 @@
     <property name="connection.username">replaceuser</property>
     <property name="connection.password">replacepassword</property>
     <property name="connection.driver_class">org.postgresql.Driver</property>
-    <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
     <property name="jdbc.use_streams_for_binary">false</property>
     <property name="xwiki.virtual_mode">schema</property>
 
diff --git a/template/xwiki/hibernate.cfg.xml b/template/xwiki/hibernate.cfg.xml
index 21b2dbec2bb72274b39415cb401a447431a0b07e..2c2e3f8a0a63698297ee17694c7e1f0133f04c6d 100644
--- a/template/xwiki/hibernate.cfg.xml
+++ b/template/xwiki/hibernate.cfg.xml
@@ -113,7 +113,6 @@
     <property name="connection.username">replaceuser</property>
     <property name="connection.password">replacepassword</property>
     <property name="connection.driver_class">org.postgresql.Driver</property>
-    <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
     <property name="jdbc.use_streams_for_binary">false</property>
     <property name="xwiki.virtual_mode">schema</property>