diff --git a/SoObjects/SOGo/SOGoGroup.h b/SoObjects/SOGo/SOGoGroup.h
index a1fcb0ab7..cd3a4988b 100644
--- a/SoObjects/SOGo/SOGoGroup.h
+++ b/SoObjects/SOGo/SOGoGroup.h
@@ -27,6 +27,7 @@
 
 @class LDAPSource;
 @class NSArray;
+@class NSMutableArray;
 @class NSString;
 @class NGLdapEntry;
 
@@ -36,6 +37,7 @@
     NSString *_identifier;
     NGLdapEntry *_entry;
     LDAPSource *_source;
+    NSMutableArray *_members;
 }
 
 + (id) groupWithIdentifier: (NSString *) theID;
@@ -45,6 +47,8 @@
 
 - (NSArray *) members;
 
+- (BOOL) hasMemberWithUID: (NSString *) memberUID;
+
 @end
 
 #endif // __SOGOGROUP_H__