diff --git a/src/ProtocolStreamWriter.php b/src/ProtocolStreamWriter.php
index 643e940..4d0a98c 100644
--- a/src/ProtocolStreamWriter.php
+++ b/src/ProtocolStreamWriter.php
@@ -30,7 +30,7 @@ class ProtocolStreamWriter implements ProtocolWriter
         $totalBytesWritten = 0;
 
         while ($totalBytesWritten < $msgSize) {
-            $bytesWritten = fwrite($this->output, substr($data, $totalBytesWritten));
+            $bytesWritten = @fwrite($this->output, substr($data, $totalBytesWritten));
             if ($bytesWritten === false) {
                 throw new Error('Could not write message.');
             }