diff --git a/src/modules/SerialModule.cpp b/src/modules/SerialModule.cpp
index a3cac53b1..1caae69a3 100644
--- a/src/modules/SerialModule.cpp
+++ b/src/modules/SerialModule.cpp
@@ -249,7 +249,7 @@ ProcessMessage SerialModuleRadio::handleReceived(const meshtastic_MeshPacket &mp
 
             if (moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_DEFAULT ||
                 moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_SIMPLE) {
-                serialPrint->printf("%s", p.payload.bytes);
+                serialPrint->write(p.payload.bytes, p.payload.size);
             } else if (moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_TEXTMSG) {
                 meshtastic_NodeInfoLite *node = nodeDB.getMeshNode(getFrom(&mp));
                 String sender = (node && node->has_user) ? node->user.short_name : "???";