diff --git a/libraries/AP_SerialManager/AP_SerialManager.cpp b/libraries/AP_SerialManager/AP_SerialManager.cpp
index 6004f70ff1..7b805c767e 100644
--- a/libraries/AP_SerialManager/AP_SerialManager.cpp
+++ b/libraries/AP_SerialManager/AP_SerialManager.cpp
@@ -494,17 +494,6 @@ void AP_SerialManager::init()
                 case SerialProtocol_Aerotenna_USD1:
                     state[i].protocol.set_and_save(SerialProtocol_Rangefinder);
                     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(),
-                                         AP_SERIALMANAGER_SBUS1_BUFSIZE_RX,
-                                         AP_SERIALMANAGER_SBUS1_BUFSIZE_TX);
-                    uart->configure_parity(2);    // enable even parity
-                    uart->set_stop_bits(2);
-                    uart->set_unbuffered_writes(true);
-                    uart->set_flow_control(AP_HAL::UARTDriver::FLOW_CONTROL_DISABLE);
-                    break;
-
                 case SerialProtocol_ESCTelemetry:
                     // ESC telemetry protocol from BLHeli32 ESCs. Note that baudrate is hardcoded to 115200
                     state[i].baud.set_and_default(115200 / 1000);
diff --git a/libraries/AP_SerialManager/AP_SerialManager_config.h b/libraries/AP_SerialManager/AP_SerialManager_config.h
index 4938b26164..8b50422058 100644
--- a/libraries/AP_SerialManager/AP_SerialManager_config.h
+++ b/libraries/AP_SerialManager/AP_SerialManager_config.h
@@ -116,11 +116,6 @@
 #define AP_SERIALMANAGER_EFI_MS_BUFSIZE_RX     512
 #define AP_SERIALMANAGER_EFI_MS_BUFSIZE_TX     16
 
-// SBUS servo outputs
-#define AP_SERIALMANAGER_SBUS1_BAUD           100000
-#define AP_SERIALMANAGER_SBUS1_BUFSIZE_RX     16
-#define AP_SERIALMANAGER_SBUS1_BUFSIZE_TX     32
-
 #define AP_SERIALMANAGER_SLCAN_BAUD             115200
 #define AP_SERIALMANAGER_SLCAN_BUFSIZE_RX       128
 #define AP_SERIALMANAGER_SLCAN_BUFSIZE_TX       128