diff --git a/pandatool/src/mayaprogs/mayaToEgg_server.cxx b/pandatool/src/mayaprogs/mayaToEgg_server.cxx
index 394313ce74..6b5d48b9d1 100755
--- a/pandatool/src/mayaprogs/mayaToEgg_server.cxx
+++ b/pandatool/src/mayaprogs/mayaToEgg_server.cxx
@@ -316,6 +316,7 @@ run() {
   close_output();
   _verbose = 0;
   _polygon_tolerance = 0.01;
+  _polygon_output = 0;
   _transform_type = MayaToEggConverter::TT_model;
   _subsets.clear();
   _subroots.clear();