diff --git a/lib/http/request/writer.rb b/lib/http/request/writer.rb
index 1c9d2fdf..34fbd4a3 100644
--- a/lib/http/request/writer.rb
+++ b/lib/http/request/writer.rb
@@ -87,7 +87,7 @@ def send_request_body
       private
 
       def write(data)
-        while data.present?
+        until data.empty?
           length = @socket.write(data)
           if data.length > length
             data = data[length..-1]