--- ray/src/rt/freeobjmem.c	2023/11/15 18:02:52	2.10
+++ ray/src/rt/freeobjmem.c	2024/04/04 18:51:18	2.11
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: freeobjmem.c,v 2.10 2023/11/15 18:02:52 greg Exp $";
+static const char	RCSid[] = "$Id: freeobjmem.c,v 2.11 2024/04/04 18:51:18 greg Exp $";
 #endif
 /*
  * Free memory associated with object(s)
@@ -59,7 +59,7 @@ free_os(			/* free unneeded memory for object */
 	case MAT_SPOT:		/* spot light source */
 	case PAT_SPECTRUM:	/* constant spectrum */
 	case PAT_SPECFILE:	/* spectrum from data file */
-		free((void *)op->os);
+		free(op->os);
 		op->os = NULL;
 		return(1);
 	}