diff --git a/repos/libports/src/lib/libc/internal/env.h b/repos/libports/src/lib/libc/internal/env.h
index 245a13c158..a5d86a8227 100644
--- a/repos/libports/src/lib/libc/internal/env.h
+++ b/repos/libports/src/lib/libc/internal/env.h
@@ -98,6 +98,7 @@ class Libc::Env_implementation : public Libc::Env, public Config_accessor
 		Region_map    &rm()     override { return _env.rm(); }
 		Pd_session    &pd()     override { return _env.pd(); }
 		Entrypoint    &ep()     override { return _env.ep(); }
+		Topo_session &topo() override { return _env.topo(); }
 
 		Cpu_session_capability cpu_session_cap() override {
 			return _env.cpu_session_cap(); }
@@ -108,6 +109,10 @@ class Libc::Env_implementation : public Libc::Env, public Config_accessor
 		Id_space<Parent::Client> &id_space() override {
 			return _env.id_space(); }
 
+		Topo_session_capability topo_session_cap() override {
+			return _env.topo_session_cap();
+		}
+
 		Session_capability session(Parent::Service_name const &name,
 		                           Parent::Client::Id id,
 		                           Parent::Session_args const &args,