diff --git a/lib/rmail/address.rb b/lib/rmail/address.rb
index a035e04..8265823 100644
--- a/lib/rmail/address.rb
+++ b/lib/rmail/address.rb
@@ -703,7 +703,7 @@ def get_tokenize
 	    @sym = SYM_DOMAIN_LITERAL
 	    @lexeme = $1.gsub(/(^|[^\\])[\r\n\t ]+/, '\1').gsub(/\\(.)/, '\1')
 	    break
-          when /\A[\200-\377\w!$%&\'*+\/=?^_\`{\}|~#-]+/m
+          when /\A[\200-\377\w!$%&\'*+\/=?^_\`{\}|~#-]+/nm
             # This is just like SYM_ATOM, but includes all characters
             # with high bits.  This is so we can allow such tokens in
             # the display name portion of an address even though it
diff --git a/lib/rmail/header.rb b/lib/rmail/header.rb
index 9102f28..ca4d0b6 100644
--- a/lib/rmail/header.rb
+++ b/lib/rmail/header.rb
@@ -73,7 +73,7 @@ class Header
 
     class Field                 # :nodoc:
       # fixme, document methadology for this (RFC2822)
-      EXTRACT_FIELD_NAME_RE = /\A([^\x00-\x1f\x7f-\xff :]+):\s*/o
+      EXTRACT_FIELD_NAME_RE = /\A([^\x00-\x1f\x7f-\xff :]+):\s*/no
 
       class << self
         def parse(field)