diff --git a/r2s-bwmsgsv2.rb b/r2s-bwmsgsv2.rb
index 4f141d3f0ae1b8af50b4fe1427dc9aa60198e9f2..ab36bf7d4730654f7c7cd702be53afa8d85c470f 100755
--- a/r2s-bwmsgsv2.rb
+++ b/r2s-bwmsgsv2.rb
@@ -91,7 +91,7 @@ while true
 
 	uri = URI("http://#{ARGV[1]}:#{ARGV[2]}/")
 	req = Net::HTTP::Post.new(uri, 'Content-Type' => 'application/json')
-	req.body = new_json_blob.split('G')[1][2..-1]  # only use MSG part
+	req.body = new_json_blob.split('G', 2)[1][2..-1]  # only use MSG part
 	begin
 		res = Net::HTTP.start(uri.hostname, uri.port) do |http|
 			http.request(req)