diff --git a/include/uapi/rdma/rdma_user_rxe.h b/include/uapi/rdma/rdma_user_rxe.h
index b3b1bfc8fa21af572d2f8cdd798aa30372835514..231190b841c8166fdefff4d2bd886f96b79528da 100644
--- a/include/uapi/rdma/rdma_user_rxe.h
+++ b/include/uapi/rdma/rdma_user_rxe.h
@@ -78,12 +78,14 @@ struct rxe_send_wr {
 		struct {
 			__u64	remote_addr;
 			__u32	rkey;
+			__u32	reserved;
 		} rdma;
 		struct {
 			__u64	remote_addr;
 			__u64	compare_add;
 			__u64	swap;
 			__u32	rkey;
+			__u32	reserved;
 		} atomic;
 		struct {
 			__u32	remote_qpn;
diff --git a/include/uapi/rdma/vmw_pvrdma-abi.h b/include/uapi/rdma/vmw_pvrdma-abi.h
index 02ca0d0f1eb7ea485cfb0196d3c1964cab25feed..edf5c722490189c894f493362c12489cbabdd87a 100644
--- a/include/uapi/rdma/vmw_pvrdma-abi.h
+++ b/include/uapi/rdma/vmw_pvrdma-abi.h
@@ -262,6 +262,7 @@ struct pvrdma_sq_wqe_hdr {
 			__u32 length;
 			__u32 access_flags;
 			__u32 rkey;
+			__u32 reserved;
 		} fast_reg;
 		struct {
 			__u32 remote_qpn;