diff --git a/src/H5Part.c b/src/H5Part.c
index ef89314..bbca9cf 100644
--- a/src/H5Part.c
+++ b/src/H5Part.c
@@ -1678,7 +1678,7 @@ H5PartGetDatasetInfo (
 		f->groupname_step, f->stepno_width, (long long) f->timestep );
 
 	herr = _H5Part_get_object_name (
-		f->timegroup,
+		f->file,
 		step_name,
 		H5G_DATASET,
 		idx,