diff --git a/source/game/options.cpp b/source/game/options.cpp
index 7d34da0..f05eaf5 100644
--- a/source/game/options.cpp
+++ b/source/game/options.cpp
@@ -257,7 +257,9 @@ auto stringToGamepadButton(const std::string& str, int default_value) -> int {
 }
 
 auto isValidPalette(const std::string& palette) -> bool {
-    return std::ranges::any_of(VALID_PALETTES, [&palette](const auto& valid) { return valid == palette; });
+    std::string lower_palette = palette;
+    std::ranges::transform(lower_palette, lower_palette.begin(), ::tolower);
+    return std::ranges::any_of(VALID_PALETTES, [&lower_palette](const auto& valid) { return valid == lower_palette; });
 }
 
 // --- Funciones helper para loadFromFile() ---