diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index c20d54b..9a28ec7 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -156,9 +156,9 @@
     mDriverPath = path;
 }
 
-void GraphicsEnv::setGpuStats(const std::string driverPackageName,
-                              const std::string driverVersionName, const uint64_t driverVersionCode,
-                              const std::string appPackageName) {
+void GraphicsEnv::setGpuStats(const std::string& driverPackageName,
+                              const std::string& driverVersionName,
+                              const uint64_t driverVersionCode, const std::string& appPackageName) {
     ATRACE_CALL();
 
     ALOGV("setGpuStats:\n"