diff --git a/lib/dbfdb.c b/lib/dbfdb.c
index b961688e..668627fb 100644
--- a/lib/dbfdb.c
+++ b/lib/dbfdb.c
@@ -418,7 +418,11 @@ int mbsedb_PackFDB(struct _fdbarea *fdb_area)
 }
 
 
-// mbsedb_SortFDB
+
+int mbsedb_SortFDB(struct _fdbarea *fdb_area)
+{
+}
+
 
 
 #endif
diff --git a/lib/mbsedb.h b/lib/mbsedb.h
index 1423a257..0942b781 100644
--- a/lib/mbsedb.h
+++ b/lib/mbsedb.h
@@ -150,6 +150,7 @@ int mbsedb_LockFDB(struct _fdbarea *, int);
 int mbsedb_UnlockFDB(struct _fdbarea *);
 int mbsedb_InsertFDB(struct _fdbarea *, struct FILE_record, int);
 int mbsedb_PackFDB(struct _fdbarea *);
+int mbsedb_SortFDB(struct _fdbarea *);
 
 #endif