diff --git a/panda/src/pgraph/config_pgraph.h b/panda/src/pgraph/config_pgraph.h
index 26d0407e7a..710cfc058e 100644
--- a/panda/src/pgraph/config_pgraph.h
+++ b/panda/src/pgraph/config_pgraph.h
@@ -53,7 +53,7 @@ extern ConfigVariableBool support_fade_lod;
 extern ConfigVariableBool depth_offset_decals;
 extern ConfigVariableInt max_collect_vertices;
 extern ConfigVariableInt max_collect_indices;
-extern ConfigVariableBool premunge_data;
+extern EXPCL_PANDA_PGRAPH ConfigVariableBool premunge_data;
 extern ConfigVariableBool preserve_geom_nodes;
 extern ConfigVariableBool flatten_geoms;