diff --git a/tasmota/tasmota_support/support_a_i2c.ino b/tasmota/tasmota_support/support_a_i2c.ino
index 0af7450d6..c857240cd 100644
--- a/tasmota/tasmota_support/support_a_i2c.ino
+++ b/tasmota/tasmota_support/support_a_i2c.ino
@@ -63,7 +63,12 @@ bool I2cBegin(int sda, int scl, uint32_t bus, uint32_t frequency) {
 #endif  // USE_I2C_BUS2_ESP8266
 #endif  // ESP8266
 #ifdef ESP32
+#ifdef USE_I2C_BUS2
   TwoWire& myWire = (0 == bus) ? Wire : Wire1;
+#else
+  if (bus > 0) { return false; }
+  TwoWire& myWire = Wire;
+#endif
   static bool reinit = false;
   if (reinit) { myWire.end(); }
   result = myWire.begin(sda, scl, frequency);