diff --git a/beetsplug/lastgenre/__init__.py b/beetsplug/lastgenre/__init__.py
index 34c5153ea..8c38eac31 100644
--- a/beetsplug/lastgenre/__init__.py
+++ b/beetsplug/lastgenre/__init__.py
@@ -72,7 +72,7 @@ def _tags_for(obj):
 
     dbg = []
     for el in res:
-        weight = int(el.weight)
+        weight = int(el.weight or 0)
         tag = el.item.get_name().lower()
         if _is_allowed(tag):
             if min_weight > -1 and min_weight > weight and len(tags) > 0:
diff --git a/docs/changelog.rst b/docs/changelog.rst
index c25812530..79d60f968 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -81,6 +81,8 @@ Other little fixes:
   local image files are no longer completely ignored.
 * :doc:`/plugins/echonest`: Fix an issue causing the plugin to appear twice in
   the output of the ``beet version`` command.
+* :doc:`/plugins/lastgenre`: Fix an occasional crash when no tag weight was
+  returned by Last.fm.
 
 
 1.3.2 (December 22, 2013)