guard PER references
diff --git a/skeletons/NativeReal.c b/skeletons/NativeReal.c
index ad6f28c..9bbb396 100644
--- a/skeletons/NativeReal.c
+++ b/skeletons/NativeReal.c
@@ -30,8 +30,13 @@
NativeReal_encode_der,
NativeReal_decode_xer,
NativeReal_encode_xer,
+#ifdef ASN_DISABLE_PER_SUPPORT
+ 0,
+ 0,
+#else
NativeReal_decode_uper,
NativeReal_encode_uper,
+#endif /* ASN_DISABLE_PER_SUPPORT */
0, /* Use generic outmost tag fetcher */
asn_DEF_NativeReal_tags,
sizeof(asn_DEF_NativeReal_tags) / sizeof(asn_DEF_NativeReal_tags[0]),