--- a/parser_yacc.y~	2008-06-06 14:50:33.000000000 +0200
+++ a/parser_yacc.y	2008-06-07 00:38:36.448522043 +0200
@@ -672,12 +672,14 @@
 			case RLIMIT_NPROC:
 			case RLIMIT_LOCKS:
 			case RLIMIT_SIGPENDING:
+#ifdef RLIMIT_RTPRIO
 			case RLIMIT_RTPRIO:
 				if ($6 == end || *end != '\0' || tmp < 0)
 					yyerror("RLIMIT '%s' invalid value %s\n", $4, $6);
 				value = tmp;
 				break;
-
+#endif
+#ifdef RLIMIT_NICE
 			case RLIMIT_NICE:
 				if ($6 == end || *end != '\0')
 					yyerror("RLIMIT '%s' invalid value %s\n", $4, $6);
@@ -685,6 +687,7 @@
 					yyerror("RLIMIT '%s' out of range (-20 .. 19) %d\n", $4, tmp);
 				value = tmp + 20;
 				break;
+#endif
 			case RLIMIT_FSIZE:
 			case RLIMIT_DATA:
 			case RLIMIT_STACK:
--- a/parser_misc.c~	2008-05-29 22:45:04.000000000 +0200
+++ a/parser_misc.c	2008-06-07 00:42:44.431478766 +0200
@@ -91,8 +91,12 @@
 	{"locks",		RLIMIT_LOCKS},
 	{"sigpending",		RLIMIT_SIGPENDING},
 	{"msgqueue",		RLIMIT_MSGQUEUE},
+#ifdef RLIMIT_NICE
 	{"nice",		RLIMIT_NICE},
+#endif
+#ifdef RLIMIT_RTPRIO
 	{"rtprio",		RLIMIT_RTPRIO},
+#endif
 	/* terminate */
 	{NULL, 0}
 };