diff --git a/src/H5Part.h b/src/H5Part.h
index 01f1a67..de79fcc 100644
--- a/src/H5Part.h
+++ b/src/H5Part.h
@@ -96,6 +96,12 @@ H5PartSetStep (
 	const h5part_int64_t step
 	);
 
+h5part_int64_t
+H5PartHasStep (
+	H5PartFile *f,
+	const h5part_int64_t step
+	);
+
 h5part_int64_t
 H5PartGetNumSteps (
 	H5PartFile *f