diff --git a/linker/linker_namespaces.h b/linker/linker_namespaces.h
index 6817901..671e0b5 100644
--- a/linker/linker_namespaces.h
+++ b/linker/linker_namespaces.h
@@ -41,11 +41,11 @@
 struct android_namespace_link_t {
  public:
   android_namespace_link_t(android_namespace_t* linked_namespace,
-                           const std::unordered_set<std::string>& shared_lib_sonames,
+                           std::unordered_set<std::string> shared_lib_sonames,
                            bool allow_all_shared_libs)
-      : linked_namespace_(linked_namespace), shared_lib_sonames_(shared_lib_sonames),
-        allow_all_shared_libs_(allow_all_shared_libs)
-  {}
+      : linked_namespace_(linked_namespace),
+        shared_lib_sonames_(std::move(shared_lib_sonames)),
+        allow_all_shared_libs_(allow_all_shared_libs) {}
 
   android_namespace_t* linked_namespace() const {
     return linked_namespace_;
@@ -127,10 +127,10 @@
     return linked_namespaces_;
   }
   void add_linked_namespace(android_namespace_t* linked_namespace,
-                            const std::unordered_set<std::string>& shared_lib_sonames,
+                            std::unordered_set<std::string> shared_lib_sonames,
                             bool allow_all_shared_libs) {
-    linked_namespaces_.push_back(
-        android_namespace_link_t(linked_namespace, shared_lib_sonames, allow_all_shared_libs));
+    linked_namespaces_.emplace_back(linked_namespace, std::move(shared_lib_sonames),
+                                    allow_all_shared_libs);
   }
 
   void add_soinfo(soinfo* si) {