diff --git a/pathologic.module b/pathologic.module
index 0fe47fc..cab0f31 100644
--- a/pathologic.module
+++ b/pathologic.module
@@ -169,7 +169,7 @@ function _pathologic_replace($matches) {
     // Bail out if it looks like there's only a fragment part.
     || (isset($parts['fragment']) && count($parts) === 1)
     // Bail out if it matches a path we want to ignore.
-    || ($path_matcher->matchPath($parts['path'], $cached_settings['current_settings']['ignore_paths']))
+    || (isset($parts['path']) && $path_matcher->matchPath($parts['path'], $cached_settings['current_settings']['ignore_paths']))
   ) {
     // Give up by "replacing" the original with the same.
     return $matches[0];