diff --git a/src/modbus.cpp b/src/modbus.cpp
index fafd54958..aeaaf5da3 100644
--- a/src/modbus.cpp
+++ b/src/modbus.cpp
@@ -438,7 +438,7 @@ ModbusMessage Modbus::handleWrite(const ModbusMessage & request) {
         if (output.size()) {
             snprintf(error,
                      sizeof(error),
-                     "Modbus write command failed with error: %s (%s)",
+                     "Modbus write command failed with error %s (%s)",
                      (const char *)output["message"],
                      Command::return_code_string(return_code));
         } else {
diff --git a/src/mqtt.cpp b/src/mqtt.cpp
index 2833c1a16..c161b3e49 100644
--- a/src/mqtt.cpp
+++ b/src/mqtt.cpp
@@ -228,9 +228,9 @@ void Mqtt::on_message(const char * topic, const uint8_t * payload, size_t len) {
 
 #if defined(EMSESP_DEBUG)
     if (len) {
-        LOG_DEBUG("Received topic `%s` => payload `%s` (length %d)", topic, message, len);
+        LOG_DEBUG("Received topic %s => payload '%s' (length %d)", topic, message, len);
     } else {
-        LOG_DEBUG("Received topic `%s`", topic);
+        LOG_DEBUG("Received topic %s", topic);
     }
 #endif
     // remove HA topics if we don't use discovery