diff --git a/src/osgPlugins/ive/ReaderWriterIVE.cpp b/src/osgPlugins/ive/ReaderWriterIVE.cpp
index 33fe37951..cad337d02 100644
--- a/src/osgPlugins/ive/ReaderWriterIVE.cpp
+++ b/src/osgPlugins/ive/ReaderWriterIVE.cpp
@@ -19,6 +19,7 @@ class ReaderWriterIVE : public ReaderWriter
         {
             supportsExtension("ive","OpenSceneGraph native binary format");
 
+            supportsOption("compressed","Export option, use zlib compression to compress the data in the .ive ");
             supportsOption("noTexturesInIVEFile","Export option");
             supportsOption("includeImageFileInIVEFile","Export option");
             supportsOption("compressImageData","Export option");