diff --git a/src/transforms.lisp b/src/transforms.lisp
index 7603f57..9c639a4 100644
--- a/src/transforms.lisp
+++ b/src/transforms.lisp
@@ -32,7 +32,7 @@
     ((null date-string) nil)
     ((string= date-string "") nil)
     ;; day is 00
-    ((string= date-string "0000-00-00" :start1 8 :start2 8 ) nil)
+    ((string= date-string "0000-00-00" :start1 8 :end1 10 :start2 8 ) nil)
     ;; month is 00
     ((string= date-string "0000-00-00" :start1 5 :end1 7 :start2 5 :end2 7) nil)
     ((string= date-string "0000-00-00") nil)