--- ray/src/rt/colortab.c	1989/10/12 11:32:09	1.8
+++ ray/src/rt/colortab.c	1989/10/16 13:43:26	1.9
@@ -51,7 +51,7 @@ static CNODE	*ctree = NULL;
 				/* our color correction map */
 static BYTE	clrmap[3][256];
 				/* histogram of colors used */
-static unsigned	histo[NRED][NGRN][NBLU];
+static unsigned short	histo[NRED][NGRN][NBLU];
 				/* initial color cube boundary */
 static int	CLRCUBE[3][2] = {0,NRED,0,NGRN,0,NBLU};