diff --git a/etc/infiniband.conf b/etc/infiniband.conf
index ac8104158..cc861e4e6 100644
--- a/etc/infiniband.conf
+++ b/etc/infiniband.conf
@@ -23,7 +23,7 @@ nodes = {
     ib_node_source = {
         type = "infiniband",
 
-        rdma_port_space = "RDMA_PS_TCP",
+        rdma_port_space = "RC",
         
         in = {
             address = "10.0.0.2:1337",
@@ -56,7 +56,7 @@ nodes = {
     ib_node_target = {
         type = "infiniband",
 
-        rdma_port_space = "RDMA_PS_TCP",
+        rdma_port_space = "RC",
 
         in = {
             address = "10.0.0.1:1337",