diff --git a/libraries/liblber/io.c b/libraries/liblber/io.c
index 378d2b685e..c4cc8d243a 100644
--- a/libraries/liblber/io.c
+++ b/libraries/liblber/io.c
@@ -263,6 +263,7 @@ ber_free( BerElement *ber, int freebuf )
 {
 	if ( freebuf && ber->ber_buf != NULL )
 		free( ber->ber_buf );
+	ber->ber_buf = NULL;
 	free( (char *) ber );
 }