diff --git a/ustc4.json b/ustc4.json
index 64e66d6..722f99b 100644
--- a/ustc4.json
+++ b/ustc4.json
@@ -22,12 +22,7 @@
             "type": "suservo",
             "sampler_ports": [2, 3],
             "urukul0_ports": [4, 5],
-            "clk_sel": 2
-        },
-        {
-            "type": "urukul",
-            "dds": "ad9910",
-            "ports": [6, 7],
+            "urukul1_ports": [6, 7],
             "clk_sel": 2
         },
         {