1 files changed, 6 insertions, 2 deletions
diff --git a/includes/theme.inc b/includes/theme.inc
index 11004306b..14b2181e3 100644
--- a/includes/theme.inc
+++ b/includes/theme.inc
@@ -171,8 +171,12 @@ function list_theme_engines($refresh = FALSE) {
  *   An HTML string that generates the themed output.
  */
 function theme() {
-  global $theme;
-  global $theme_engine;
+  global $theme, $theme_engine;
+
+  if (!$theme) {
+    // Initialize the enabled theme.
+    $theme = init_theme();
+  }
 
   $args = func_get_args();
   $function = array_shift($args);