--- ray/src/util/rmtxop.c	2023/12/19 00:39:03	2.31
+++ ray/src/util/rmtxop.c	2024/05/16 18:59:19	2.33
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: rmtxop.c,v 2.31 2023/12/19 00:39:03 greg Exp $";
+static const char RCSid[] = "$Id: rmtxop.c,v 2.33 2024/05/16 18:59:19 greg Exp $";
 #endif
 /*
  * General component matrix operations.
@@ -7,7 +7,6 @@ static const char RCSid[] = "$Id: rmtxop.c,v 2.31 2023
 
 #include <errno.h>
 #include "rtio.h"
-#include "resolu.h"
 #include "rmatrix.h"
 #include "platform.h"
 
@@ -256,10 +255,10 @@ checksymbolic(ROPMAT *rop)
 		}
 	}
 					/* return recommended output type */
-	if (!strcmp(rop->preop.csym, "XYZ")) {
+	if (!strcasecmp(rop->preop.csym, "XYZ")) {
 		if (dt <= DTspec)
 			return(DTxyze);
-	} else if (!strcmp(rop->preop.csym, "RGB")) {
+	} else if (!strcasecmp(rop->preop.csym, "RGB")) {
 		if (dt <= DTspec)
 			return(DTrgbe);
 	} else if (dt == DTspec)