diff --git a/src/api/sorting/plugin_sort.cpp b/src/api/sorting/plugin_sort.cpp
index d4af27e6..60b288be 100644
--- a/src/api/sorting/plugin_sort.cpp
+++ b/src/api/sorting/plugin_sort.cpp
@@ -29,7 +29,7 @@
 
 namespace loot {
 std::vector<std::string> SortPlugins(
-    Game& game,
+    const Game& game,
     const std::vector<std::string>& loadOrder) {
   PluginGraph graph;
 
diff --git a/src/api/sorting/plugin_sort.h b/src/api/sorting/plugin_sort.h
index 822ae55b..fe88b2a9 100644
--- a/src/api/sorting/plugin_sort.h
+++ b/src/api/sorting/plugin_sort.h
@@ -31,7 +31,7 @@
 #include "api/game/game.h"
 
 namespace loot {
-std::vector<std::string> SortPlugins(Game& game,
+std::vector<std::string> SortPlugins(const Game& game,
                                      const std::vector<std::string>& loadOrder);
 }