diff --git a/linker/linker_config.cpp b/linker/linker_config.cpp
index 391c8a9..ac4c1fd 100644
--- a/linker/linker_config.cpp
+++ b/linker/linker_config.cpp
@@ -489,7 +489,7 @@
 
   g_config.set_target_sdk_version(target_sdk_version);
 
-  for (auto ns_config_it : namespace_configs) {
+  for (const auto& ns_config_it : namespace_configs) {
     auto& name = ns_config_it.first;
     NamespaceConfig* ns_config = ns_config_it.second;