diff --git a/index.js b/index.js
index 815e237..06e3709 100644
--- a/index.js
+++ b/index.js
@@ -87,7 +87,7 @@ function toRegEx (names) {
   if (domains.both.length > 0) {
     entries.push('([^\\.]+\\.)?(' + domains.both.join('|') + ')')
   }
-  return new RegExp('^((' + entries.join(')|(') + '))$', 'gm')
+  return new RegExp('^((' + entries.join(')|(') + '))$', 'm')
 }
 
 exports.getCommonNames = getCommonNames