diff --git a/ChangeLog b/ChangeLog
index ea89b892d..d5396e8ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-05-10  Ludovic Marcotte  <lmarcotte@inverse.ca>
+
+	*  NSDictionary+Utilities.m (userRecordAsLDIFEntry):
+	Fix to avoid a crash when backing up resources' LDIF entries
+
 2011-05-06  Francis Lachapelle  <flachapelle@inverse.ca>
 
 	* UI/WebServerResources/UIxPreferences.js
diff --git a/SoObjects/SOGo/NSDictionary+Utilities.m b/SoObjects/SOGo/NSDictionary+Utilities.m
index 25a066ec8..4ea7469c2 100644
--- a/SoObjects/SOGo/NSDictionary+Utilities.m
+++ b/SoObjects/SOGo/NSDictionary+Utilities.m
@@ -1,6 +1,6 @@
 /* NSDictionary+Utilities.m - this file is part of SOGo
  *
- * Copyright (C) 2007 Inverse inc.
+ * Copyright (C) 2007-2011 Inverse inc.
  *
  * Author: Wolfgang Sourdeau <wsourdeau@inverse.ca>
  *
@@ -172,7 +172,9 @@
             || [currentKey hasPrefix: @"objectClass"]
             || [currentKey hasPrefix: @"c_"]
             || [currentKey isEqualToString: @"dn"]
-	    || [currentKey isEqualToString: @"isGroup"]))
+	    || [currentKey isEqualToString: @"isGroup"]
+	    || [currentKey isEqualToString: @"isResource"]
+	    || [currentKey isEqualToString: @"numberOfSimultaneousBookings"]))
         [self _appendLDIFKey: currentKey toString: ldifString];
     }