diff --git a/examples/raytrace/render-config.cc b/examples/raytrace/render-config.cc
index b2e8e5f..7baa0e2 100644
--- a/examples/raytrace/render-config.cc
+++ b/examples/raytrace/render-config.cc
@@ -35,6 +35,12 @@ bool LoadRenderConfig(example::RenderConfig* config, const char* filename) {
     }
   }
 
+  if (o.find("gltf_filename") != o.end()) {
+    if (o["gltf_filename"].is<std::string>()) {
+      config->gltf_filename = o["gltf_filename"].get<std::string>();
+    }
+  }
+
   if (o.find("eson_filename") != o.end()) {
     if (o["eson_filename"].is<std::string>()) {
       config->eson_filename = o["eson_filename"].get<std::string>();
diff --git a/examples/raytrace/render-config.h b/examples/raytrace/render-config.h
index fed4c0b..c3ffe4e 100644
--- a/examples/raytrace/render-config.h
+++ b/examples/raytrace/render-config.h
@@ -29,6 +29,7 @@ typedef struct {
 
   // Scene input info
   std::string obj_filename;
+  std::string gltf_filename;
   std::string eson_filename;
   float scene_scale;