diff --git a/includes/videojs.admin.inc b/includes/videojs.admin.inc
index 7e8756ccc99c46bce4c2555d318b0d642724dd65..3a475754c43c25b80f78dbcdbd9529bf44e0a2c4 100644
--- a/includes/videojs.admin.inc
+++ b/includes/videojs.admin.inc
@@ -99,7 +99,7 @@ function videojs_settings_form_submit($form, &$form_state) {
 
   // Clean all variables before system_settings_form_submit() creates new ones.
   // This prevents variables for removed content types remaining in the variables table.
-  db_query('DELETE FROM {variable} WHERE name LIKE "videojs_%%"');
+  db_query("DELETE FROM {variable} WHERE name LIKE 'videojs_%%'");
 
   // Store width & height as ints, autoplay as bool
   $v['videojs_height'] = intval($v['videojs_height']);
diff --git a/videojs.install b/videojs.install
index 6a2975bc563cad72175fa00f32c5cd74c59bd34d..fd3a7958ce266c3be9ef04ae8cf022600a88c21f 100644
--- a/videojs.install
+++ b/videojs.install
@@ -37,7 +37,7 @@ function videojs_requirements($phase) {
  * Implementation of hook_uninstall().
  */
 function videojs_uninstall() {
-  db_query('DELETE FROM {variable} WHERE name LIKE "videojs_%%"');
+  db_query("DELETE FROM {variable} WHERE name LIKE 'videojs_%%'");
 }
 
 /**