diff --git a/gramps/gen/lib/src.py b/gramps/gen/lib/src.py
index ea4543f21..37561ce2d 100644
--- a/gramps/gen/lib/src.py
+++ b/gramps/gen/lib/src.py
@@ -40,13 +40,15 @@ from .reporef import RepoRef
 from .const import DIFFERENT, EQUAL, IDENTICAL
 from ..constfunc import cuni
 from .handle import Handle
+from .citationbase import IndirectCitationBase
 
 #-------------------------------------------------------------------------
 #
 # Source class
 #
 #-------------------------------------------------------------------------
-class Source(MediaBase, NoteBase, SrcAttributeBase, PrimaryObject):
+class Source(MediaBase, NoteBase, SrcAttributeBase, IndirectCitationBase,
+        PrimaryObject):
     """A record of a source of information."""
     
     def __init__(self):
diff --git a/gramps/gen/merge/mergecitationquery.py b/gramps/gen/merge/mergecitationquery.py
index fba082e8b..79cd0a216 100644
--- a/gramps/gen/merge/mergecitationquery.py
+++ b/gramps/gen/merge/mergecitationquery.py
@@ -31,7 +31,7 @@ Provide merge capabilities for citations.
 #
 #-------------------------------------------------------------------------
 from ..lib import (Person, Family, Event, Place,
-        MediaObject, Repository, Citation)
+        MediaObject, Repository, Citation, Source)
 from ..db import DbTxn
 from ..const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.sgettext
@@ -101,6 +101,12 @@ class MergeCitationQuery(object):
                     citation.replace_citation_references(old_handle, 
                                                            new_handle)
                     self.database.commit_citation(citation, trans)
+                elif class_name == Source.__name__:
+                    source = self.database.get_source_from_handle(handle)
+                    assert(source.has_citation_reference(old_handle))
+                    source.replace_citation_references(old_handle, 
+                                                           new_handle)
+                    self.database.commit_source(source, trans)
                 else:
                     raise MergeError("Encounter an object of type %s that has "
                             "a citation reference." % class_name)