diff --git a/bin/trace b/bin/trace
index faa69f738e..d8f6454d2f 100755
--- a/bin/trace
+++ b/bin/trace
@@ -35,6 +35,8 @@ $Source = "";
                "MPI_Info"                  => "Mi",
                "off_t"                     => "o",
                "H5P_class_t"               => "p",
+               "href_t"                    => "r",
+               "H5R_type_t"                => "Rt",
                "char*"                     => "s",
 	       "H5S_class_t"               => "Sc",
 	       "H5S_seloper_t"             => "Ss",