diff --git a/libraries/AP_SerialManager/AP_SerialManager.cpp b/libraries/AP_SerialManager/AP_SerialManager.cpp
index c7cd66398f39bc..472a469ade0e29 100644
--- a/libraries/AP_SerialManager/AP_SerialManager.cpp
+++ b/libraries/AP_SerialManager/AP_SerialManager.cpp
@@ -502,14 +502,9 @@ void AP_SerialManager::init()
                     state[i].protocol.set_and_save(SerialProtocol_Rangefinder);
                     break;
                 case SerialProtocol_Volz:
-                                    // Note baudrate is hardcoded to 115200
-                                    state[i].baud.set_and_default(AP_SERIALMANAGER_VOLZ_BAUD);   // update baud param in case user looks at it
-                                    uart->begin(state[i].baudrate(),
-                                    		AP_SERIALMANAGER_VOLZ_BUFSIZE_RX,
-											AP_SERIALMANAGER_VOLZ_BUFSIZE_TX);
-                                    uart->set_unbuffered_writes(true);
-                                    uart->set_flow_control(AP_HAL::UARTDriver::FLOW_CONTROL_DISABLE);
-                                    break;
+                    // Note baudrate is hardcoded to 115200
+                    state[i].baud.set_and_default(AP_SERIALMANAGER_VOLZ_BAUD);   // update baud param in case user looks at it
+                    break;
                 case SerialProtocol_Sbus1:
                     state[i].baud.set_and_default(AP_SERIALMANAGER_SBUS1_BAUD / 1000);   // update baud param in case user looks at it
                     uart->begin(state[i].baudrate(),
diff --git a/libraries/AP_SerialManager/AP_SerialManager_config.h b/libraries/AP_SerialManager/AP_SerialManager_config.h
index fb25527a8ff7ff..768e6858189f30 100644
--- a/libraries/AP_SerialManager/AP_SerialManager_config.h
+++ b/libraries/AP_SerialManager/AP_SerialManager_config.h
@@ -111,8 +111,6 @@
 #define AP_SERIALMANAGER_GIMBAL_BUFSIZE_TX      128
 
 #define AP_SERIALMANAGER_VOLZ_BAUD           115
-#define AP_SERIALMANAGER_VOLZ_BUFSIZE_RX     128
-#define AP_SERIALMANAGER_VOLZ_BUFSIZE_TX     128
 
 #define AP_SERIALMANAGER_ROBOTIS_BUFSIZE_RX  128
 #define AP_SERIALMANAGER_ROBOTIS_BUFSIZE_TX  128