Index: similarity.inc
===================================================================
RCS file: /cvs/drupal/contributions/modules/similarity/similarity.inc,v
retrieving revision 1.1.2.3
diff -u -p -r1.1.2.3 similarity.inc
--- similarity.inc	13 Mar 2009 21:14:23 -0000	1.1.2.3
+++ similarity.inc	18 Mar 2009 22:16:21 -0000
@@ -209,7 +209,7 @@ abstract class similarity {
    */
   protected function cleanup() {
     // delete from the table where score < min_sim / 100
-    db_query("DELETE FROM {" . $this->machine_name . "_similarity} WHERE score < %d", $this->min_sim / 100);
+    db_query('DELETE FROM {' . $this->machine_name . '_similarity} WHERE score < %f', $this->min_sim / 100);
   }
 }