diff --git a/util/common/nets/machxo2.py b/util/common/nets/machxo2.py
index 2b17ab0..d332428 100644
--- a/util/common/nets/machxo2.py
+++ b/util/common/nets/machxo2.py
@@ -107,7 +107,7 @@
             return "R_" + netname
         else:
             assert False, "bad CENTER netname"
-    elif tile.startswith("CIB_EBR") and global_up_down_re.match(wire):
+    elif "CIB_EBR" in tile and global_up_down_re.match(wire):
         if prefix_pos[0] < tile_pos[0]:
             return "U_" + netname
         elif prefix_pos[0] > tile_pos[0]: