diff --git a/config/punctuation/rhvoice-en.conf b/config/punctuation/rhvoice-en.conf
index 2bdb018b..1c1a1c89 100644
--- a/config/punctuation/rhvoice-en.conf
+++ b/config/punctuation/rhvoice-en.conf
@@ -44,9 +44,9 @@ _:===:line
 =:===:equals
 
 [customDict]
-certificate:===:certifficate
-nginx:===:EngineX
-shit:===:shitt
+regex;(?i)certificate:===:certifficate
+regex;(?i)nginx:===:EngineX
+regex;(?i)shit:===:shitt
 
 [emoticonDict]
 # This dictionary uses regexp when prefixed with "regex;", so be sure to escape anything that would be parsed by regexp, e.g. *, ., ^, $, etc.