diff --git a/_vale/config/vocabularies/Docker/accept.txt b/_vale/config/vocabularies/Docker/accept.txt
index 1036af5ee6..07fb5e1242 100644
--- a/_vale/config/vocabularies/Docker/accept.txt
+++ b/_vale/config/vocabularies/Docker/accept.txt
@@ -1,4 +1,4 @@
-(?-i)[A-Z]{2,}'?s
+(?i)[A-Z]{2,}'?s
 Amazon
 Anchore
 Apple