diff --git a/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp b/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp
index 8ce43dfec..0fdc9100e 100644
--- a/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp
+++ b/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp
@@ -205,7 +205,7 @@ class FLTReaderWriter : public ReaderWriter
             if (!document.getPreserveFace())
             {
                 osgUtil::Optimizer optimizer;
-                optimizer.optimize(document.getHeaderNode(),  osgUtil::Optimizer::SHARE_DUPLICATE_STATE | osgUtil::Optimizer::MERGE_GEOMETRY | osgUtil::Optimizer::MERGE_GEODES);
+                optimizer.optimize(document.getHeaderNode(),  osgUtil::Optimizer::SHARE_DUPLICATE_STATE | osgUtil::Optimizer::MERGE_GEOMETRY | osgUtil::Optimizer::MERGE_GEODES | osgUtil::Optimizer::TESSELATE_GEOMETRY );
             }
 
             return document.getHeaderNode();