diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc
index b6c531c..e822b4f 100644
--- a/includes/bootstrap.inc
+++ b/includes/bootstrap.inc
@@ -2401,6 +2401,10 @@ function _drupal_bootstrap_page_cache() {
     // Make sure there is a user object because its timestamp will be
     // checked, hook_boot might check for anonymous user etc.
     $user = drupal_anonymous_user();
+    // If skipping the bootstrap hooks is not enforced, invoke hook_boot().
+    if (variable_get('page_cache_invoke_hooks', TRUE)) {
+      bootstrap_invoke_all('boot');
+    }
     // Get the page from the cache.
     $cache = drupal_page_get_cache();
     // If there is a cached page, display it.
@@ -2410,14 +2414,8 @@ function _drupal_bootstrap_page_cache() {
       $_GET['q'] = $cache->data['path'];
       drupal_set_title($cache->data['title'], PASS_THROUGH);
       date_default_timezone_set(drupal_get_user_timezone());
-      // If the skipping of the bootstrap hooks is not enforced, call
-      // hook_boot.
-      if (variable_get('page_cache_invoke_hooks', TRUE)) {
-        bootstrap_invoke_all('boot');
-      }
       drupal_serve_page_from_cache($cache);
-      // If the skipping of the bootstrap hooks is not enforced, call
-      // hook_exit.
+      // If skipping the bootstrap hooks is not enforced, invoke hook_exit().
       if (variable_get('page_cache_invoke_hooks', TRUE)) {
         bootstrap_invoke_all('exit');
       }
@@ -2428,6 +2426,10 @@ function _drupal_bootstrap_page_cache() {
       header('X-Drupal-Cache: MISS');
     }
   }
+  else {
+    // Invoke hook_boot().
+    bootstrap_invoke_all('boot');
+  }
 }
 
 /**
@@ -2500,11 +2502,9 @@ function _drupal_bootstrap_variables() {
 }
 
 /**
- * Invokes hook_boot(), initializes locking system, and sends HTTP headers.
+ * Send HTTP headers.
  */
 function _drupal_bootstrap_page_header() {
-  bootstrap_invoke_all('boot');
-
   if (!drupal_is_cli()) {
     ob_start();
     drupal_page_header();