diff --git a/ChangeLog b/ChangeLog
index 04ddaab87..267832309 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@
 	* src/ListModel.py: Check for the list to be long enough.
 	* src/gramps.glade: Replace ComboBox with ComboBoxEntry; remove
 	unneeded scrollwed window (caused warning).
+	* src/RelLib.py (Family.set_relationship): Update doc string.
 
 2005-06-01  Don Allingham  <don@gramps-project.org>
 	* src/EditPerson.py: Start event_ref integration
diff --git a/src/RelLib.py b/src/RelLib.py
index 6b812c5f8..8d655809b 100644
--- a/src/RelLib.py
+++ b/src/RelLib.py
@@ -1953,7 +1953,9 @@ class Family(PrimaryObject,SourceNote,MediaBase,AttributeBase):
     def set_relationship(self,relationship_type):
         """
         Sets the relationship type between the people identified as the
-        father and mother in the relationship. The valid values are:
+        father and mother in the relationship. The type is a tuple whose
+        first item is an integer constant and whose second item is
+        the string. The valid values are:
 
             - C{Family.MARRIED} : indicates a legally recognized married
                 relationship between two individuals. This may be either