diff --git a/modules/system.module b/modules/system.module
index 63afa7045ff45a291a54bf95e57be4e6b515cd0a..917993284eb02304c025cddf8bb3681f89343725 100644
--- a/modules/system.module
+++ b/modules/system.module
@@ -846,6 +846,7 @@ function system_themes_submit($form_id, $values) {
   }
   else {
     variable_del('theme_default');
+    db_query("UPDATE {system} SET status = 1 WHERE type = 'theme' AND name ='bluemarine'");
   }
 
   menu_rebuild();
diff --git a/modules/system/system.module b/modules/system/system.module
index 63afa7045ff45a291a54bf95e57be4e6b515cd0a..917993284eb02304c025cddf8bb3681f89343725 100644
--- a/modules/system/system.module
+++ b/modules/system/system.module
@@ -846,6 +846,7 @@ function system_themes_submit($form_id, $values) {
   }
   else {
     variable_del('theme_default');
+    db_query("UPDATE {system} SET status = 1 WHERE type = 'theme' AND name ='bluemarine'");
   }
 
   menu_rebuild();