diff --git a/includes/common.inc b/includes/common.inc
index a94b011..288d89e 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -5218,7 +5218,10 @@ function drupal_set_page_content($content = NULL) {
   $main_content_display = &drupal_static('system_main_content_added', FALSE);
 
   if (!empty($content)) {
-    $content_block = (is_array($content) ? $content : array('main' => array('#markup' => $content)));
+    if (!is_array($content)) {
+      $content_block = array('#markup' => $content);
+    }
+    $content_block = array('main' => $content);
   }
   else {
     // Indicate that the main content has been requested. We assume that