diff --git a/src/openrct2/drawing/Drawing.cpp b/src/openrct2/drawing/Drawing.cpp
index 95cb1f3048..9684b6033b 100644
--- a/src/openrct2/drawing/Drawing.cpp
+++ b/src/openrct2/drawing/Drawing.cpp
@@ -300,7 +300,7 @@ enum
     SPR_PALETTE_GLASS_VOID,
 };
 
-const FilterPaletteID GlassPaletteIds[COLOUR_COUNT] = {
+static constexpr FilterPaletteID GlassPaletteIds[COLOUR_COUNT] = {
     FilterPaletteID::PaletteGlassBlack,
     FilterPaletteID::PaletteGlassGrey,
     FilterPaletteID::PaletteGlassWhite,