diff --git a/lib/libncp/ncpl_bind.c b/lib/libncp/ncpl_bind.c
index d7c64ede86c4..d00cfa8376c2 100644
--- a/lib/libncp/ncpl_bind.c
+++ b/lib/libncp/ncpl_bind.c
@@ -85,7 +85,7 @@ ncp_read_property_value(NWCONN_HANDLE connid, int object_type,
 
 int
 ncp_scan_bindery_object(NWCONN_HANDLE connid, u_int32_t last_id,
-	u_int16_t object_type, char *search_string,
+	u_int16_t object_type, const char *search_string,
 	struct ncp_bindery_object *target)
 {
 	int error;
diff --git a/sys/netncp/ncp_lib.h b/sys/netncp/ncp_lib.h
index 2e8eebe767a5..275b53b5c9a9 100644
--- a/sys/netncp/ncp_lib.h
+++ b/sys/netncp/ncp_lib.h
@@ -174,7 +174,7 @@ int  ncp_get_bindery_object_id(NWCONN_HANDLE, u_int16_t, const char *,
 int  ncp_get_bindery_object_name(NWCONN_HANDLE, u_int32_t,
 		struct ncp_bindery_object *);
 int  ncp_scan_bindery_object(NWCONN_HANDLE, u_int32_t, u_int16_t, 
-		char *, struct ncp_bindery_object *);
+		const char *, struct ncp_bindery_object *);
 int  ncp_read_property_value(NWCONN_HANDLE, int object_type, const char *,
 		int, const char *, struct nw_property *);
 int  ncp_get_encryption_key(NWCONN_HANDLE, char *);