diff --git a/src/core/system.cpp b/src/core/system.cpp
index 1a9c2ea54..2bdabb084 100644
--- a/src/core/system.cpp
+++ b/src/core/system.cpp
@@ -160,7 +160,6 @@ static bool Initialize(std::unique_ptr<CDImage> disc, DiscRegion disc_region, bo
                        std::optional<bool> start_fullscreen, Error* error);
 static bool LoadBIOS(bool* using_auto_select, Error* error);
 static bool SetBootMode(BootMode new_boot_mode, DiscRegion disc_region, bool* missing_bios, Error* error);
-static void UpdateConsoleRegion();
 static void InternalReset();
 static void ClearRunningGame();
 static void DestroySystem();