diff --git a/src/p_user.c b/src/p_user.c
index 6844d2cba37560905f15a2ab13b99ab3df7e0081..d527c29c9f1039c3a138ec050dea0d32e5e8cfa6 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -51,9 +51,6 @@
 #include "hardware/hw_main.h"
 #endif
 
-// Index of the special effects (INVUL inverse) map.
-#define INVERSECOLORMAP 32
-
 #if 0
 static void P_NukeAllPlayers(player_t *player);
 #endif