diff --git a/ChangeLog b/ChangeLog
index cdb324db..4878fd1c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -16039,3 +16039,6 @@
 	* Fixed a bug in 'lib/rdrenderer.cpp' and 'lib/rdrenerer.h' that
 	caused logs rendered to cart/cut in stereo regardless of the number
 	of channels specified.
+2017-09-20 Fred Gleason <fredg@paravelsystems.com>
+	* Fixed a bug in rdrender(1) that caused the --channels option
+	to be ignored.
diff --git a/docs/docbook/rdrender.xml b/docs/docbook/rdrender.xml
index a8a511cf..d2055544 100644
--- a/docs/docbook/rdrender.xml
+++ b/docs/docbook/rdrender.xml
@@ -341,8 +341,9 @@
   options).
 </para>
 <para>
-  Maximum length of the rendered log is limited to appoximately two hours when
-  using <option>--to-cart</option>.
+  Due to limitations inherent in the 32 bit Broadcast Wave File format used in
+  Rivendell's audio store, the maximum length of the rendered log is limited
+  to appoximately three hours when using <option>--to-cart</option>.
 </para>
 </refsect1>
 
diff --git a/utils/rdrender/rdrender.cpp b/utils/rdrender/rdrender.cpp
index 34c45922..98357f33 100644
--- a/utils/rdrender/rdrender.cpp
+++ b/utils/rdrender/rdrender.cpp
@@ -46,7 +46,6 @@ MainObject::MainObject(QObject *parent)
   :QObject(parent)
 {
   render_verbose=false;
-  render_channels=RDRENDER_DEFAULT_CHANNELS;
   render_first_line=-1;
   render_last_line=-1;
   render_ignore_stops=false;
@@ -89,8 +88,9 @@ MainObject::MainObject(QObject *parent)
       cmd->setProcessed(i,true);
     }
     if(cmd->key(i)=="--channels") {
-      render_channels=cmd->value(i).toUInt(&ok);
-      if((!ok)||(render_channels>2)) {
+      render_settings.setChannels(cmd->value(i).toUInt(&ok));
+      if((!ok)||
+	 (render_settings.channels()>2)||(render_settings.channels()==0)) {
 	fprintf(stderr,"rdrender: invalid --channels argument\n");
 	exit(1);
       }
diff --git a/utils/rdrender/rdrender.h b/utils/rdrender/rdrender.h
index f12aed46..6c680a9d 100644
--- a/utils/rdrender/rdrender.h
+++ b/utils/rdrender/rdrender.h
@@ -60,7 +60,6 @@ class MainObject : public QObject
   unsigned render_cart_number;
   int render_cut_number;
   QString render_temp_output_filename;
-  unsigned render_channels;
   QTime render_start_time;
   int render_first_line;
   int render_last_line;