diff --git a/controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusDeviceBySpec.kt b/controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusDeviceBySpec.kt
index 1956e40..916187f 100644
--- a/controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusDeviceBySpec.kt
+++ b/controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusDeviceBySpec.kt
@@ -22,7 +22,7 @@ public open class ModbusDeviceBySpec<D: Device>(
 ) : ModbusDevice, DeviceBySpec<D>(spec, context, meta){
     override suspend fun open() {
         master.connect()
-        super<ModbusDevice>.open()
+        super<DeviceBySpec>.open()
     }
 
     override fun close() {