diff --git a/cache.py b/cache.py
index 67fe4e43..1914c134 100644
--- a/cache.py
+++ b/cache.py
@@ -230,7 +230,7 @@
     \bKLU\sDZE |
     ^[DR]HN\b |
     SU\sI?RVEY\b |
-    [A-RT-Z]PORT$ |
+    [^AESIOUS]PORT$ |
     H[DO0]L[O0]ING |
     H[D0]LDING |
     M[DO0]HMAN[O0] |