diff --git a/keyboards/controllerworks/mini36/keyboard.json b/keyboards/controllerworks/mini36/keyboard.json
index 9f5e0815a56..8039025a282 100644
--- a/keyboards/controllerworks/mini36/keyboard.json
+++ b/keyboards/controllerworks/mini36/keyboard.json
@@ -44,7 +44,6 @@
             "pin": "GP1"
         },
         "transport": {
-            "protocol": "serial",
             "sync": {
                 "indicators": true,
                 "layer_state": true,
diff --git a/keyboards/controllerworks/mini42/keyboard.json b/keyboards/controllerworks/mini42/keyboard.json
index 3c7d89e4683..ceb7f8ce1f1 100644
--- a/keyboards/controllerworks/mini42/keyboard.json
+++ b/keyboards/controllerworks/mini42/keyboard.json
@@ -44,7 +44,6 @@
             "pin": "GP1"
         },
         "transport": {
-            "protocol": "serial",
             "sync": {
                 "indicators": true,
                 "layer_state": true,
diff --git a/keyboards/cradio/keyboard.json b/keyboards/cradio/keyboard.json
index 421bafaf39c..433c6e96e9a 100644
--- a/keyboards/cradio/keyboard.json
+++ b/keyboards/cradio/keyboard.json
@@ -45,9 +45,6 @@
         },
         "serial": {
             "pin": "D2"
-        },
-        "transport": {
-            "protocol": "serial"
         }
     },
     "community_layouts": ["split_3x5_2"],
diff --git a/keyboards/keebio/sinc/rev1/keyboard.json b/keyboards/keebio/sinc/rev1/keyboard.json
index f2af31c3fec..e8703abdc1e 100644
--- a/keyboards/keebio/sinc/rev1/keyboard.json
+++ b/keyboards/keebio/sinc/rev1/keyboard.json
@@ -26,7 +26,6 @@
     "split": {
         "enabled": true,
         "transport": {
-            "protocol": "serial",
             "sync" :{
                 "indicators": true
             }
diff --git a/keyboards/keebio/sinc/rev2/keyboard.json b/keyboards/keebio/sinc/rev2/keyboard.json
index 22ef7bc0589..fed181982ec 100644
--- a/keyboards/keebio/sinc/rev2/keyboard.json
+++ b/keyboards/keebio/sinc/rev2/keyboard.json
@@ -26,7 +26,6 @@
     "split": {
         "enabled": true,
         "transport": {
-            "protocol": "serial",
             "sync" :{
                 "indicators": true
             }
diff --git a/keyboards/salicylic_acid3/guide68/keyboard.json b/keyboards/salicylic_acid3/guide68/keyboard.json
index f32db9646dc..0714262858f 100644
--- a/keyboards/salicylic_acid3/guide68/keyboard.json
+++ b/keyboards/salicylic_acid3/guide68/keyboard.json
@@ -51,9 +51,6 @@
         "handedness": {
             "pin": "B6"
         },
-        "transport": {
-            "protocol": "serial"
-        },
         "serial": {
             "pin": "D0"
         }