diff --git a/ptb8.json b/ptb8.json
index 192e8ba..80dc5be 100644
--- a/ptb8.json
+++ b/ptb8.json
@@ -35,14 +35,14 @@
         {
           "type": "urukul",
           "hw_rev": "v1.5",
-          "ports": [3, 4],
+          "ports": [3],
           "clk_sel": 2,
           "synchronization": true
         },
         {
           "type": "urukul",
           "hw_rev": "v1.5",
-          "ports": [5, 6],
+          "ports": [5],
           "clk_sel": 2,
           "synchronization": true
         },
@@ -50,7 +50,7 @@
           "type": "urukul",
           "hw_rev": "v1.4",
           "variant": "AD9912",
-          "ports": [7, 10],
+          "ports": [7],
           "dds": "ad9912",
           "clk_sel": 2
         },