diff --git a/desktop_version/src/UtilityClass.cpp b/desktop_version/src/UtilityClass.cpp
index c472583d..12c0d1f4 100644
--- a/desktop_version/src/UtilityClass.cpp
+++ b/desktop_version/src/UtilityClass.cpp
@@ -119,7 +119,7 @@ int UtilityClass::Int(const char* str, int fallback /*= 0*/)
 	return (int) SDL_strtol(str, NULL, 0);
 }
 
-std::string UtilityClass::GCString(std::vector<SDL_GameControllerButton> buttons)
+std::string UtilityClass::GCString(const std::vector<SDL_GameControllerButton>& buttons)
 {
 	std::string retval = "";
 	for (size_t i = 0; i < buttons.size(); i += 1)
diff --git a/desktop_version/src/UtilityClass.h b/desktop_version/src/UtilityClass.h
index 1f9c2c51..d93e5a54 100644
--- a/desktop_version/src/UtilityClass.h
+++ b/desktop_version/src/UtilityClass.h
@@ -39,7 +39,7 @@ public:
 
     static int Int(const char* str, int fallback = 0);
 
-    static std::string GCString(std::vector<SDL_GameControllerButton> buttons);
+    static std::string GCString(const std::vector<SDL_GameControllerButton>& buttons);
 
     std::string twodigits(int t);