diff --git a/Source/DiabloUI/title.cpp b/Source/DiabloUI/title.cpp
index 2f605d079..641cda9ae 100644
--- a/Source/DiabloUI/title.cpp
+++ b/Source/DiabloUI/title.cpp
@@ -3,6 +3,7 @@
 #include "DiabloUI/diabloui.h"
 
 namespace devilution {
+namespace {
 
 std::vector<UiItemBase *> vecTitleScreen;
 
@@ -30,6 +31,8 @@ void title_Free()
 	vecTitleScreen.clear();
 }
 
+} // namespace
+
 void UiTitleDialog()
 {
 	if (gbIsHellfire) {