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-rw-r--r--includes/bootstrap.inc2
1 files changed, 1 insertions, 1 deletions
diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc
index 34398c727..28681452a 100644
--- a/includes/bootstrap.inc
+++ b/includes/bootstrap.inc
@@ -599,7 +599,7 @@ function drupal_page_header() {
// Check http headers:
$modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? $_SERVER['HTTP_IF_MODIFIED_SINCE'] == $date : NULL;
- if (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) && ($timestamp = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])) != -1) {
+ if (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) && ($timestamp = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])) > 0) {
$modified_since = $cache->created <= $timestamp;
}
else {