diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 27015c6d8eb5..3bdbd9f3b88f 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1490,7 +1490,7 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg,
 	memset(&frmr_wr, 0, sizeof frmr_wr);
 	frmr_wr.opcode = IB_WR_FAST_REG_MR;
 	frmr_wr.send_flags = 0;			/* unsignaled */
-	frmr_wr.wr.fast_reg.iova_start = (unsigned long)seg1->mr_dma;
+	frmr_wr.wr.fast_reg.iova_start = seg1->mr_dma;
 	frmr_wr.wr.fast_reg.page_list = seg1->mr_chunk.rl_mw->r.frmr.fr_pgl;
 	frmr_wr.wr.fast_reg.page_list_len = i;
 	frmr_wr.wr.fast_reg.page_shift = PAGE_SHIFT;