diff --git a/src/game/game.cpp b/src/game/game.cpp
index 7cffc924a0b..7ddfc190bc7 100644
--- a/src/game/game.cpp
+++ b/src/game/game.cpp
@@ -9239,7 +9239,7 @@ void Game::removeGuild(uint32_t guildId) {
 	guilds.erase(guildId);
 }
 
-void Game::internalRemoveItems(const std::vector<std::shared_ptr<Item>> itemVector, uint32_t amount, bool stackable) {
+void Game::internalRemoveItems(const std::vector<std::shared_ptr<Item>>& itemVector, uint32_t amount, bool stackable) {
 	if (stackable) {
 		for (std::shared_ptr<Item> item : itemVector) {
 			if (item->getItemCount() > amount) {
diff --git a/src/game/game.hpp b/src/game/game.hpp
index cce1c21e5a3..427d51d8d16 100644
--- a/src/game/game.hpp
+++ b/src/game/game.hpp
@@ -498,7 +498,7 @@ class Game {
 
 	phmap::flat_hash_map<std::shared_ptr<Tile>, std::weak_ptr<Container>> browseFields;
 
-	void internalRemoveItems(const std::vector<std::shared_ptr<Item>> itemVector, uint32_t amount, bool stackable);
+	void internalRemoveItems(const std::vector<std::shared_ptr<Item>>& itemVector, uint32_t amount, bool stackable);
 
 	std::shared_ptr<BedItem> getBedBySleeper(uint32_t guid) const;
 	void setBedSleeper(std::shared_ptr<BedItem> bed, uint32_t guid);