diff --git a/Rakefile b/Rakefile
index 8c0a6fe..8f8885e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -51,7 +51,7 @@ spec = Gem::Specification.new do |s|
 
 	s.autorequire = 'msg'
 
-	s.add_dependency 'ruby-ole'
+	s.add_dependency 'ruby-ole', '>=1.2.1'
 end
 
 Rake::GemPackageTask.new(spec) do |p|
diff --git a/lib/msg.rb b/lib/msg.rb
index 8f0fd83..4d7974f 100755
--- a/lib/msg.rb
+++ b/lib/msg.rb
@@ -144,9 +144,9 @@ def populate_headers
 			# of the ole name, or just leave it if we can't
 			recips = recips_by_type[type]
 			recips = (recips.sort_by { |r| r.obj.name[/\d{8}$/].hex } rescue recips)
-			# are you supposed to use ; or , to separate?
+			# switched to using , for separation, not ;. see issue #4
 			# recips.empty? is strange. i wouldn't have thought it possible, but it was right?
-			headers[type.to_s.sub(/^(.)/) { $1.upcase }] = [recips.join('; ')] unless recips.empty?
+			headers[type.to_s.sub(/^(.)/) { $1.upcase }] = [recips.join(', ')] unless recips.empty?
 		end
 		headers['Subject'] = [props.subject] if props.subject