diff --git a/extra_script.py b/extra_script.py
new file mode 100644
index 0000000..fda0754
--- /dev/null
+++ b/extra_script.py
@@ -0,0 +1,3 @@
+Import("env")
+
+env.Append(LINKFLAGS=["-Wl,--allow-multiple-definition"])
diff --git a/platformio.ini b/platformio.ini
index 11da872..2fa019e 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -19,6 +19,8 @@ build_flags =
     -DARDUINO_USB_CDC_ON_BOOT=1
     -DUSE_TINYUSB=1
 
+extra_scripts = pre:extra_script.py
+
 monitor_speed = 115200
 
 board_build.partitions = default_8MB.csv