--- setarch.c
+++ setarch.c
@@ -112,7 +112,7 @@
 	     && strcmp(un.machine, "i686")
 	     && strcmp(un.machine, "athlon")))
 	{
-	  fprintf(stderr, "Don't know how to set arch to %s\n", pers);
+	  fprintf(stderr, "Unable to set arch to %s\n", pers);
 	  exit(1);
 	}
     }