diff --git a/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/conf/ConfigurationService.java b/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/conf/ConfigurationService.java
index 67e78ce..588c60d 100644
--- a/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/conf/ConfigurationService.java
+++ b/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/conf/ConfigurationService.java
@@ -22,8 +22,8 @@
 import com.google.inject.Inject;
 import java.util.Collections;
 import java.util.List;
-import org.apache.directory.api.ldap.model.filter.EqualityNode;
 import org.apache.directory.api.ldap.model.filter.ExprNode;
+import org.apache.directory.api.ldap.model.filter.PresenceNode;
 import org.apache.directory.api.ldap.model.message.AliasDerefMode;
 import org.apache.directory.api.ldap.model.name.Dn;
 import org.apache.guacamole.GuacamoleException;
@@ -317,7 +317,7 @@
     public ExprNode getUserSearchFilter() throws GuacamoleException {
         return environment.getProperty(
             LDAPGuacamoleProperties.LDAP_USER_SEARCH_FILTER,
-            new EqualityNode("objectClass","user")
+            new PresenceNode("objectClass")
         );
     }
 
diff --git a/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/group/UserGroupService.java b/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/group/UserGroupService.java
index 2fb31af..5eb375c 100644
--- a/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/group/UserGroupService.java
+++ b/extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/group/UserGroupService.java
@@ -31,6 +31,7 @@
 import org.apache.directory.api.ldap.model.filter.EqualityNode;
 import org.apache.directory.api.ldap.model.filter.ExprNode;
 import org.apache.directory.api.ldap.model.filter.NotNode;
+import org.apache.directory.api.ldap.model.filter.PresenceNode;
 import org.apache.directory.api.ldap.model.name.Dn;
 import org.apache.directory.ldap.client.api.LdapNetworkConnection;
 import org.apache.guacamole.auth.ldap.conf.ConfigurationService;
@@ -87,7 +88,7 @@
 
         // Read any object as a group if LDAP is not being used for connection
         // storage (guacConfigGroup)
-        return new EqualityNode("objectClass","group");
+        return new PresenceNode("objectClass");
 
     }