diff --git a/Source/Core/DolphinQt/Config/GraphicsModListWidget.cpp b/Source/Core/DolphinQt/Config/GraphicsModListWidget.cpp
index 2151642d2b..f8f0bc86db 100644
--- a/Source/Core/DolphinQt/Config/GraphicsModListWidget.cpp
+++ b/Source/Core/DolphinQt/Config/GraphicsModListWidget.cpp
@@ -185,7 +185,7 @@ void GraphicsModListWidget::ModItemChanged(QListWidgetItem* item)
   m_needs_save = true;
 }
 
-void GraphicsModListWidget::OnModChanged(std::optional<std::string> absolute_path)
+void GraphicsModListWidget::OnModChanged(const std::optional<std::string>& absolute_path)
 {
   ClearLayoutRecursively(m_mod_meta_layout);
 
@@ -198,7 +198,7 @@ void GraphicsModListWidget::OnModChanged(std::optional<std::string> absolute_pat
     return;
   }
 
-  GraphicsModConfig* mod = m_mod_group.GetMod(*absolute_path);
+  const GraphicsModConfig* mod = m_mod_group.GetMod(*absolute_path);
   if (!mod)
     return;
 
diff --git a/Source/Core/DolphinQt/Config/GraphicsModListWidget.h b/Source/Core/DolphinQt/Config/GraphicsModListWidget.h
index 7b32792cff..ff310af56c 100644
--- a/Source/Core/DolphinQt/Config/GraphicsModListWidget.h
+++ b/Source/Core/DolphinQt/Config/GraphicsModListWidget.h
@@ -52,7 +52,7 @@ private:
   void ModSelectionChanged();
   void ModItemChanged(QListWidgetItem* item);
 
-  void OnModChanged(std::optional<std::string> absolute_path);
+  void OnModChanged(const std::optional<std::string>& absolute_path);
 
   void SaveModList();