diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
index 62caae8181736eea1c123935cdf576470d589140..7652efc35eb984db98a1ed6a79c0bebe2362ef54 100644
--- a/include/rdma/rdma_cm.h
+++ b/include/rdma/rdma_cm.h
@@ -65,7 +65,6 @@ enum rdma_cm_event_type {
 const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event);
 
 enum rdma_port_space {
-	RDMA_PS_SDP   = 0x0001,
 	RDMA_PS_IPOIB = 0x0002,
 	RDMA_PS_IB    = 0x013F,
 	RDMA_PS_TCP   = 0x0106,