diff --git a/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.cpp b/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.cpp
index f9373362a35..eb1c155a1cd 100644
--- a/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.cpp
+++ b/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.cpp
@@ -125,7 +125,7 @@ void MapBufferBuilder::ensureDynamicDataSpace(int32_t size) {
   }
 }
 
-void MapBufferBuilder::putString(Key key, std::string value) {
+void MapBufferBuilder::putString(Key key, std::string const &value) {
   int32_t strLength = static_cast<int32_t>(value.length());
   const char *cstring = getCstring(&value);
 
diff --git a/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.h b/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.h
index ef198cb2e14..f7190f7fd38 100644
--- a/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.h
+++ b/ReactCommon/react/renderer/mapbuffer/MapBufferBuilder.h
@@ -82,7 +82,7 @@ class MapBufferBuilder {
 
   void putNull(Key key);
 
-  void putString(Key key, std::string value);
+  void putString(Key key, std::string const &value);
 
   void putMapBuffer(Key key, MapBuffer &map);