--- block_class.module	2010-04-08 10:21:13.000000000 -0300
+++ block_class.module.modificado	2010-04-08 10:15:10.000000000 -0300
@@ -2,7 +2,7 @@
 // $Id: block_class.module,v 1.3.4.4 2010/01/18 22:10:13 toddnienkerk Exp $
 
 function block_class_attributes($block) {
-  $ret = db_fetch_object(db_query('SELECT css_class FROM {block_class} WHERE module = "%s" AND delta = "%s"', $block->module, $block->delta));
+  $ret = db_fetch_object(db_query('SELECT css_class FROM {block_class} WHERE module = \'%s\' AND delta = \'%s\'', $block->module, $block->delta));
   if ($ret !== FALSE) {
     return $ret;
   }
@@ -44,10 +44,10 @@ function block_class_form_submit($form, 
       $delta = $form_state['values']['delta'];
       $class = $form_state['values']['css_class'];
   
-      db_query('DELETE FROM {block_class} WHERE module = "%s" AND delta = "%s"', $module, $delta);
+      db_query('DELETE FROM {block_class} WHERE module = \'%s\' AND delta = \'%s\'', $module, $delta);
   
       if (!empty($class)) {
-        db_query('INSERT INTO {block_class} (module, delta, css_class) VALUES ("%s", "%s", "%s")', $module, $delta, $class);
+        db_query('INSERT INTO {block_class} (module, delta, css_class) VALUES (\'%s\', \'%s\', \'%s\')', $module, $delta, $class);
       }
     }
   }