diff --git a/reference/stream/constants.xml b/reference/stream/constants.xml
index 06b4f0f099..f4557d2a1b 100644
--- a/reference/stream/constants.xml
+++ b/reference/stream/constants.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.5 $ -->
+<!-- $Revision: 1.6 $ -->
 <section id="stream.constants">
  &reftitle.constants;
  &extension.constants;
@@ -144,7 +144,7 @@
       <entry><constant>STREAM_NOTIFY_PROGRESS</constant></entry>
       <entry>
        Indicates current progress of the stream transfer in
-       <parameter>byets_transferred</parameter> and possibly
+       <parameter>bytes_transferred</parameter> and possibly
        <parameter>bytes_max</parameter> as well.
       </entry>
      </row>