diff --git a/unix/vncserver b/unix/vncserver
index 9e7a6ac..139f960 100755
--- a/unix/vncserver
+++ b/unix/vncserver
@@ -684,6 +684,7 @@ sub Usage
 	"                 [-geometry <width>x<height>]\n".
 	"                 [-pixelformat rgbNNN|bgrNNN]\n".
 	"                 [-fp <font-path>]\n".
+	"                 [-cc <visual>]\n".
 	"                 [-fg]\n".
 	"                 [-autokill]\n".
 	"                 [-noxstartup]\n".
diff --git a/vncviewer/vncviewer.cxx b/vncviewer/vncviewer.cxx
index f076565..05669a4 100644
--- a/vncviewer/vncviewer.cxx
+++ b/vncviewer/vncviewer.cxx
@@ -352,6 +352,11 @@ static void usage(const char *programName)
           "       %s [parameters] -listen [port] [parameters]\n"
           "       %s [parameters] [.tigervnc file]\n",
           programName, programName, programName);
+  fprintf(stderr,"\n"
+	  "Options:\n\n"
+	  "  -display Xdisplay - Specifies the X display for the viewer window\n"
+	  "  -geometry geometry - Standard X position and sizing specification.\n");
+
   fprintf(stderr,"\n"
           "Parameters can be turned on with -<param> or off with -<param>=0\n"
           "Parameters which take a value can be specified as "