diff --git a/lib/libesp32/berry_tasmota/src/be_serial_lib.c b/lib/libesp32/berry_tasmota/src/be_serial_lib.c
index 504afe0d2..3b2c4cfd7 100644
--- a/lib/libesp32/berry_tasmota/src/be_serial_lib.c
+++ b/lib/libesp32/berry_tasmota/src/be_serial_lib.c
@@ -6,8 +6,7 @@
  * 2 wire communication - I2C
  *******************************************************************/
 #include "be_constobj.h"
-
-#include "esp32-hal.h"
+#include "esp_idf_version.h"
 
 extern int b_serial_init(bvm *vm);
 extern int b_serial_deinit(bvm *vm);
@@ -17,6 +16,40 @@ extern int b_serial_read(bvm *vm);
 extern int b_serial_available(bvm *vm);
 extern int b_serial_flush(bvm *vm);
 
+#if ESP_IDF_VERSION_MAJOR < 5
+    #include "esp32-hal.h"
+#else
+    // it should be #include "HardwareSerial.h"
+    // but the C++ header cannot be included in a C file
+    // so there's a copy below
+    enum SerialConfig {
+        SERIAL_5N1 = 0x8000010,
+        SERIAL_6N1 = 0x8000014,
+        SERIAL_7N1 = 0x8000018,
+        SERIAL_8N1 = 0x800001c,
+        SERIAL_5N2 = 0x8000030,
+        SERIAL_6N2 = 0x8000034,
+        SERIAL_7N2 = 0x8000038,
+        SERIAL_8N2 = 0x800003c,
+        SERIAL_5E1 = 0x8000012,
+        SERIAL_6E1 = 0x8000016,
+        SERIAL_7E1 = 0x800001a,
+        SERIAL_8E1 = 0x800001e,
+        SERIAL_5E2 = 0x8000032,
+        SERIAL_6E2 = 0x8000036,
+        SERIAL_7E2 = 0x800003a,
+        SERIAL_8E2 = 0x800003e,
+        SERIAL_5O1 = 0x8000013,
+        SERIAL_6O1 = 0x8000017,
+        SERIAL_7O1 = 0x800001b,
+        SERIAL_8O1 = 0x800001f,
+        SERIAL_5O2 = 0x8000033,
+        SERIAL_6O2 = 0x8000037,
+        SERIAL_7O2 = 0x800003b,
+        SERIAL_8O2 = 0x800003f
+    };
+#endif
+
 #include "be_fixed_be_class_serial.h"
 
 /* @const_object_info_begin