diff --git a/windows/window.c b/windows/window.c
index 1e1c824e..3d40cedc 100644
--- a/windows/window.c
+++ b/windows/window.c
@@ -158,7 +158,7 @@ static enum {
 } und_mode;
 static int descent;
 
-#define NCFGCOLOURS 24
+#define NCFGCOLOURS 22
 #define NEXTCOLOURS 240
 #define NALLCOLOURS (NCFGCOLOURS + NEXTCOLOURS)
 static COLORREF colours[NALLCOLOURS];