diff --git a/app/src/main/java/com/geeksville/mesh/repository/radio/BluetoothInterfaceFactory.kt b/app/src/main/java/com/geeksville/mesh/repository/radio/BluetoothInterfaceFactory.kt
index 1120ad6d4..fe9664fd7 100644
--- a/app/src/main/java/com/geeksville/mesh/repository/radio/BluetoothInterfaceFactory.kt
+++ b/app/src/main/java/com/geeksville/mesh/repository/radio/BluetoothInterfaceFactory.kt
@@ -23,4 +23,6 @@ import dagger.assisted.AssistedFactory
  * Factory for creating `BluetoothInterface` instances.
  */
 @AssistedFactory
-interface BluetoothInterfaceFactory : InterfaceFactorySpi<BluetoothInterface>
\ No newline at end of file
+interface BluetoothInterfaceFactory {
+    fun create(rest: String): BluetoothInterface
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/geeksville/mesh/repository/radio/MockInterfaceFactory.kt b/app/src/main/java/com/geeksville/mesh/repository/radio/MockInterfaceFactory.kt
index 559440884..689b16a42 100644
--- a/app/src/main/java/com/geeksville/mesh/repository/radio/MockInterfaceFactory.kt
+++ b/app/src/main/java/com/geeksville/mesh/repository/radio/MockInterfaceFactory.kt
@@ -23,4 +23,6 @@ import dagger.assisted.AssistedFactory
  * Factory for creating `MockInterface` instances.
  */
 @AssistedFactory
-interface MockInterfaceFactory : InterfaceFactorySpi<MockInterface>
\ No newline at end of file
+interface MockInterfaceFactory {
+    fun create(rest: String): MockInterface
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/geeksville/mesh/repository/radio/NopInterfaceFactory.kt b/app/src/main/java/com/geeksville/mesh/repository/radio/NopInterfaceFactory.kt
index 24c22d099..9ba0f32de 100644
--- a/app/src/main/java/com/geeksville/mesh/repository/radio/NopInterfaceFactory.kt
+++ b/app/src/main/java/com/geeksville/mesh/repository/radio/NopInterfaceFactory.kt
@@ -23,4 +23,6 @@ import dagger.assisted.AssistedFactory
  * Factory for creating `NopInterface` instances.
  */
 @AssistedFactory
-interface NopInterfaceFactory : InterfaceFactorySpi<NopInterface>
\ No newline at end of file
+interface NopInterfaceFactory {
+    fun create(rest: String): NopInterface
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/geeksville/mesh/repository/radio/SerialInterfaceFactory.kt b/app/src/main/java/com/geeksville/mesh/repository/radio/SerialInterfaceFactory.kt
index eab75a67a..88d8a8527 100644
--- a/app/src/main/java/com/geeksville/mesh/repository/radio/SerialInterfaceFactory.kt
+++ b/app/src/main/java/com/geeksville/mesh/repository/radio/SerialInterfaceFactory.kt
@@ -23,4 +23,6 @@ import dagger.assisted.AssistedFactory
  * Factory for creating `SerialInterface` instances.
  */
 @AssistedFactory
-interface SerialInterfaceFactory : InterfaceFactorySpi<SerialInterface>
\ No newline at end of file
+interface SerialInterfaceFactory {
+    fun create(rest: String): SerialInterface
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/geeksville/mesh/repository/radio/TCPInterfaceFactory.kt b/app/src/main/java/com/geeksville/mesh/repository/radio/TCPInterfaceFactory.kt
index da9449ac7..abeee0556 100644
--- a/app/src/main/java/com/geeksville/mesh/repository/radio/TCPInterfaceFactory.kt
+++ b/app/src/main/java/com/geeksville/mesh/repository/radio/TCPInterfaceFactory.kt
@@ -23,4 +23,6 @@ import dagger.assisted.AssistedFactory
  * Factory for creating `TCPInterface` instances.
  */
 @AssistedFactory
-interface TCPInterfaceFactory : InterfaceFactorySpi<TCPInterface>
\ No newline at end of file
+interface TCPInterfaceFactory {
+    fun create(rest: String): TCPInterface
+}
\ No newline at end of file