diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c
index 544d13b1ca6..ed1f4945eb2 100644
--- a/src/H5Dchunk.c
+++ b/src/H5Dchunk.c
@@ -7707,7 +7707,7 @@ H5D__chunk_iter_cb(const H5D_chunk_rec_t *chunk_rec, void *udata)
  *-------------------------------------------------------------------------
  */
 herr_t
-H5D__chunk_iter(const H5D_t *dset, H5D_chunk_iter_op_t op, void *op_data)
+H5D__chunk_iter(H5D_t *dset, H5D_chunk_iter_op_t op, void *op_data)
 {
     const H5D_rdcc_t  *rdcc   = NULL;       /* Raw data chunk cache */
     H5O_layout_t      *layout = NULL;       /* Dataset layout */
diff --git a/src/H5Dpkg.h b/src/H5Dpkg.h
index 811130b6bd8..31e5356ef71 100644
--- a/src/H5Dpkg.h
+++ b/src/H5Dpkg.h
@@ -571,7 +571,7 @@ H5_DLL herr_t  H5D__get_chunk_info(const H5D_t *dset, const H5S_t *space, hsize_
                                    unsigned *filter_mask, haddr_t *offset, hsize_t *size);
 H5_DLL herr_t  H5D__get_chunk_info_by_coord(const H5D_t *dset, const hsize_t *coord, unsigned *filter_mask,
                                             haddr_t *addr, hsize_t *size);
-H5_DLL herr_t  H5D__chunk_iter(const H5D_t *dset, H5D_chunk_iter_op_t cb, void *op_data);
+H5_DLL herr_t  H5D__chunk_iter(H5D_t *dset, H5D_chunk_iter_op_t cb, void *op_data);
 H5_DLL haddr_t H5D__get_offset(const H5D_t *dset);
 H5_DLL void   *H5D__vlen_get_buf_size_alloc(size_t size, void *info);
 H5_DLL herr_t  H5D__vlen_get_buf_size(void *elem, hid_t type_id, unsigned ndim, const hsize_t *point,