asn1_* renamed into asn_*

diff --git a/skeletons/ISO646String.h b/skeletons/ISO646String.h
index c1ff80f..5c3c73a 100644
--- a/skeletons/ISO646String.h
+++ b/skeletons/ISO646String.h
@@ -10,6 +10,6 @@
 
 typedef VisibleString_t ISO646String_t;	/* Implemented using VisibleString */
 
-extern asn1_TYPE_descriptor_t asn1_DEF_ISO646String;
+extern asn_TYPE_descriptor_t asn_DEF_ISO646String;
 
 #endif	/* _ISO646String_H_ */