diff --git a/Machines/Atari2600/TIA.hpp b/Machines/Atari2600/TIA.hpp
index d6c18f2f4..599585ddb 100644
--- a/Machines/Atari2600/TIA.hpp
+++ b/Machines/Atari2600/TIA.hpp
@@ -113,8 +113,8 @@ class TIA {
 		enum class ColourIndex {
 			Background = 0,
 			PlayfieldBall,
-			PlayerMissile1,
-			PlayerMissile0
+			PlayerMissile0,
+			PlayerMissile1
 		};
 		uint8_t colour_palette_[4];