diff --git a/ChangeLog b/ChangeLog
index a27c11639..39eeb62a7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2009-06-04  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* SoObjects/Contacts/SOGoContactGCSFolder.m
+	(-lookupContactsWithFilter:sortBy:ordering:): same as below.
+
 	* SoObjects/SOGo/LDAPSource.m: properly escaped user-entered
 	strings which may contain quotes and thereby mess up the LDAP
 	queries.
diff --git a/SoObjects/Contacts/SOGoContactGCSFolder.m b/SoObjects/Contacts/SOGoContactGCSFolder.m
index 0ba541de5..8c627c1e4 100644
--- a/SoObjects/Contacts/SOGoContactGCSFolder.m
+++ b/SoObjects/Contacts/SOGoContactGCSFolder.m
@@ -216,7 +216,8 @@
 
   if (filter && [filter length] > 0)
     {
-      filter = [filter stringByReplacingString: @"'"  withString: @"\\'\\'"];
+      filter = [[filter stringByReplacingString: @"\\"  withString: @"\\\\"]
+                 stringByReplacingString: @"'"  withString: @"\\'\\'"];
       qs = [NSString stringWithFormat:
                        @"(c_sn isCaseInsensitiveLike: '%@%%') OR "
                      @"(c_givenname isCaseInsensitiveLike: '%@%%') OR "