diff --git a/drivers/gles2/rasterizer_scene_gles2.cpp b/drivers/gles2/rasterizer_scene_gles2.cpp
index 7fac97e0042..31362045e2b 100644
--- a/drivers/gles2/rasterizer_scene_gles2.cpp
+++ b/drivers/gles2/rasterizer_scene_gles2.cpp
@@ -2429,7 +2429,7 @@ void RasterizerSceneGLES2::_render_render_list(RenderList::Element **p_elements,
 
 		state.scene_shader.set_conditional(SceneShaderGLES2::USE_PHYSICAL_LIGHT_ATTENUATION, storage->config.use_physical_light_attenuation);
 
-		bool octahedral_compression = ((RasterizerStorageGLES2::Surface *)e->geometry)->format & VisualServer::ArrayFormat::ARRAY_FLAG_USE_OCTAHEDRAL_COMPRESSION;
+		bool octahedral_compression = e->instance->base_type != VS::INSTANCE_IMMEDIATE && ((RasterizerStorageGLES2::Surface *)e->geometry)->format & VisualServer::ArrayFormat::ARRAY_FLAG_USE_OCTAHEDRAL_COMPRESSION;
 		if (octahedral_compression != prev_octahedral_compression) {
 			state.scene_shader.set_conditional(SceneShaderGLES2::ENABLE_OCTAHEDRAL_COMPRESSION, octahedral_compression);
 			rebind = true;
diff --git a/drivers/gles3/rasterizer_scene_gles3.cpp b/drivers/gles3/rasterizer_scene_gles3.cpp
index 8330800ae39..cc747474cc9 100644
--- a/drivers/gles3/rasterizer_scene_gles3.cpp
+++ b/drivers/gles3/rasterizer_scene_gles3.cpp
@@ -2114,7 +2114,7 @@ void RasterizerSceneGLES3::_render_list(RenderList::Element **p_elements, int p_
 
 		state.scene_shader.set_conditional(SceneShaderGLES3::USE_PHYSICAL_LIGHT_ATTENUATION, storage->config.use_physical_light_attenuation);
 
-		bool octahedral_compression = ((RasterizerStorageGLES3::Surface *)e->geometry)->format & VisualServer::ArrayFormat::ARRAY_FLAG_USE_OCTAHEDRAL_COMPRESSION;
+		bool octahedral_compression = e->instance->base_type != VS::INSTANCE_IMMEDIATE && ((RasterizerStorageGLES3::Surface *)e->geometry)->format & VisualServer::ArrayFormat::ARRAY_FLAG_USE_OCTAHEDRAL_COMPRESSION;
 		if (octahedral_compression != prev_octahedral_compression) {
 			state.scene_shader.set_conditional(SceneShaderGLES3::ENABLE_OCTAHEDRAL_COMPRESSION, octahedral_compression);
 			rebind = true;