diff --git a/thermion_dart/native/include/ThermionDartFFIApi.h b/thermion_dart/native/include/ThermionDartFFIApi.h
index c851a7eb..8a0cac21 100644
--- a/thermion_dart/native/include/ThermionDartFFIApi.h
+++ b/thermion_dart/native/include/ThermionDartFFIApi.h
@@ -67,7 +67,7 @@ extern "C"
     EMSCRIPTEN_KEEPALIVE void remove_light_ffi(void *const viewer, EntityId entityId);
     EMSCRIPTEN_KEEPALIVE void clear_lights_ffi(void *const viewer);
     EMSCRIPTEN_KEEPALIVE void load_glb_ffi(void *const sceneManager, const char *assetPath, int numInstances, bool keepData, void (*callback)(EntityId));
-    EMSCRIPTEN_KEEPALIVE void load_glb_from_buffer_ffi(void *const sceneManager, const void *const data, size_t length, int numInstances, bool keepData, void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void load_glb_from_buffer_ffi(void *const sceneManager, const uint8_t *const data, size_t length, int numInstances, bool keepData, void (*callback)(EntityId));
     EMSCRIPTEN_KEEPALIVE void load_gltf_ffi(void *const sceneManager, const char *assetPath, const char *relativePath, bool keepData, void (*callback)(EntityId));
     EMSCRIPTEN_KEEPALIVE void create_instance_ffi(void *const sceneManager, EntityId entityId, void (*callback)(EntityId));
     EMSCRIPTEN_KEEPALIVE void remove_entity_ffi(void *const viewer, EntityId asset, void (*callback)());
@@ -102,7 +102,8 @@ extern "C"
         void (*callback)(bool));
     EMSCRIPTEN_KEEPALIVE void set_post_processing_ffi(void *const viewer, bool enabled);
     EMSCRIPTEN_KEEPALIVE void reset_to_rest_pose_ffi(void *const sceneManager, EntityId entityId, void(*callback)());
-    EMSCRIPTEN_KEEPALIVE void create_geometry_ffi(void *const sceneManager, float *vertices, int numVertices, uint16_t *indices, int numIndices, int primitiveType, const char *materialPath, void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void create_geometry_ffi(void *const sceneManager, float *vertices, int numVertices, uint16_t *indices, int numIndices, int primitiveType, const char *materialPath, bool keepData, void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void create_geometry_with_normals_ffi(void *const sceneManager, float *vertices, int numVertices, float *normals, int numNormals, uint16_t *indices, int numIndices, int primitiveType, const char *materialPath, bool keepData, void (*callback)(EntityId));
 
 #ifdef __cplusplus
 }