diff --git a/skeletons/asn_application.h b/skeletons/asn_application.h
new file mode 100644
index 0000000..14fe3a9
--- /dev/null
+++ b/skeletons/asn_application.h
@@ -0,0 +1,25 @@
+/*-
+ * Copyright (c) 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+/*
+ * Application-level ASN.1 API.
+ */
+#ifndef	_ASN_APPLICATION_H_
+#define	_ASN_APPLICATION_H_
+
+#include <asn_types.h>		/* for platform-dependent types */
+
+/*
+ * Generic type of an application-defined callback to return various
+ * types of data to the application.
+ * EXPECTED RETURN VALUES:
+ *  -1: Failed to consume bytes. Abort the mission.
+ * Non-negative return values indicate success, and ignored.
+ */
+typedef int (asn_app_consume_bytes_f)(const void *buffer, size_t size,
+	void *application_specific_key);
+
+#include <constr_TYPE.h>	/* for asn1_TYPE_descriptor_t */
+
+#endif	/* _ASN_APPLICATION_H_ */
diff --git a/skeletons/asn_types.h b/skeletons/asn_types.h
index 80ab061..81a00c3 100644
--- a/skeletons/asn_types.h
+++ b/skeletons/asn_types.h
@@ -52,14 +52,4 @@
 #endif /* __GNUC__ */
 #endif	/* MIN */
 
-/*
- * Generic type of an application-defined callback to return various
- * types of data to the application.
- * EXPECTED RETURN VALUES:
- *  -1: Failed to consume bytes. Abort the mission.
- * Other return values indicate success, and ignored.
- */
-typedef int (asn_app_consume_bytes_f)(const void *buffer, size_t size,
-	void *application_specific_key);
-
 #endif	/* _ASN_TYPES_H_ */