diff --git a/exec/totemconfig.c b/exec/totemconfig.c
index 4b5865b2..041f574e 100644
--- a/exec/totemconfig.c
+++ b/exec/totemconfig.c
@@ -689,9 +689,9 @@ key_error:
 static void totem_key_change_notify(object_change_type_t change_type,
 			      hdb_handle_t parent_object_handle,
 			      hdb_handle_t object_handle,
-			      void *object_name_pt, int object_name_len,
-			      void *key_name_pt, int key_len,
-			      void *key_value_pt, int key_value_len,
+			      const void *object_name_pt, int object_name_len,
+			      const void *key_name_pt, int key_len,
+			      const void *key_value_pt, int key_value_len,
 			      void *priv_data_pt)
 {
 	struct totem_config *totem_config = priv_data_pt;