diff --git a/src/osgPlugins/osg/ReaderWriterOSG.cpp b/src/osgPlugins/osg/ReaderWriterOSG.cpp
index a069c13f8..a1e24f7d4 100644
--- a/src/osgPlugins/osg/ReaderWriterOSG.cpp
+++ b/src/osgPlugins/osg/ReaderWriterOSG.cpp
@@ -264,6 +264,10 @@ class OSGReaderWriter : public ReaderWriter
                     {
                         fout.setOutputTextureFiles(true);
                     }
+                    if (opt=="OutputShaderFiles")
+                    {
+                        fout.setOutputShaderFiles(true);
+                    }
                 }
             }
         }