diff --git a/ports/atmel-samd/README.rst b/ports/atmel-samd/README.rst
index 649a142e1d..1ff2a0e80b 100644
--- a/ports/atmel-samd/README.rst
+++ b/ports/atmel-samd/README.rst
@@ -24,7 +24,7 @@ boards use smaller version.
 
 =====================  ===================  ===============  ===========================  ======================  ================  ==================  =========================  ================  ================
 `microcontroller.pin`  `board`
----------------------  -------------------  -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+---------------------  ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Datasheet              arduino_mkrzero      arduino_zero     circuitplayground_express    feather_m0_adalogger    feather_m0_basic  feather_m0_express  gemma_m0                   metro_m0_express  trinket_m0
 =====================  ===================  ===============  ===========================  ======================  ================  ==================  =========================  ================  ================
 PA00                                                         ``ACCELEROMETER_SDA``                                                                      ``APA102_MOSI``                              ``APA102_MOSI``