1 files changed, 3 insertions, 2 deletions
diff --git a/src/mbgl/programs/program_parameters.hpp b/src/mbgl/programs/program_parameters.hpp
index b91b41f358..e427963f81 100644
--- a/src/mbgl/programs/program_parameters.hpp
+++ b/src/mbgl/programs/program_parameters.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <string>
+#include <utility>
 
 namespace mbgl {
 
@@ -8,8 +9,8 @@ class ProgramParameters {
 public:
     ProgramParameters(float pixelRatio_ = 1.0,
                       bool overdraw_ = false,
-                      const std::string& cacheDir_ = "")
-        : pixelRatio(pixelRatio_), overdraw(overdraw_), cacheDir(cacheDir_) {
+                      std::string cacheDir_ = "")
+        : pixelRatio(pixelRatio_), overdraw(overdraw_), cacheDir(std::move(cacheDir_)) {
     }
 
     const float pixelRatio;