diff --git a/ports/raspberrypi/boards/melopero_shake_rp2040/pico-sdk-configboard.h b/ports/raspberrypi/boards/melopero_shake_rp2040/pico-sdk-configboard.h
new file mode 100644
index 0000000000..5f7eb47ae3
--- /dev/null
+++ b/ports/raspberrypi/boards/melopero_shake_rp2040/pico-sdk-configboard.h
@@ -0,0 +1,2 @@
+// Put board-specific pico-sdk definitions here. This file must exist.
+#define PICO_XOSC_STARTUP_DELAY_MULTIPLIER 64