diff --git a/source/BuildsRenderer.php b/source/BuildsRenderer.php
index 7aa7a80..298add0 100644
--- a/source/BuildsRenderer.php
+++ b/source/BuildsRenderer.php
@@ -79,10 +79,10 @@ class BuildsRenderer {
       return 1;
     }
 
-    // Then sort by time descending.
-    if ($a->file_mtime > $b->file_mtime) {
+    // Then sort by time ascending.
+    if ($a->file_mtime < $b->file_mtime) {
       return -1;
-    } else if ($a->file_mtime < $b->file_mtime) {
+    } else if ($a->file_mtime > $b->file_mtime) {
       return 1;
     }