--- acidfree.install	2008-12-15 16:12:45.000000000 +0100
+++ acidfreeNew.install	2010-07-01 11:56:58.309697585 +0200
@@ -23,7 +23,7 @@ Foundation, Inc., 51 Franklin Street, Fi
 
 function acidfree_uninstall() {
     db_query('DROP TABLE {acidfree_album}');
-    db_query("DELETE FROM {variable} WHERE name LIKE '%%s%'", 'acidfree');
+    db_query("DELETE FROM {variable} WHERE name LIKE '%s%%'", 'acidfree');
     taxonomy_del_vocabulary(variable_get('acidfree_vocab_id', 0));
     db_query("DELETE FROM {blocks} WHERE module = '%s'", 'acidfree');
 }