diff --git a/arch/arm/src/samd/sam_spi.c b/arch/arm/src/samd/sam_spi.c
index 46ea0f4672d..9c9bf522a82 100644
--- a/arch/arm/src/samd/sam_spi.c
+++ b/arch/arm/src/samd/sam_spi.c
@@ -1550,7 +1550,7 @@ struct spi_dev_s *up_spiinitialize(int port)
 
   (void)spi_setfrequency((struct spi_dev_s *)priv, 400000);
 
-  /* Set MSB first data order and the configured pad mux setting, 
+  /* Set MSB first data order and the configured pad mux setting,
    * Note that SPI mode 0 is assumed initially (CPOL=0 and CPHA=0).
    */