diff --git a/arch/arm/src/stm32/stm32_spi.c b/arch/arm/src/stm32/stm32_spi.c
index b925e3a97fd..ab7d01ebeef 100644
--- a/arch/arm/src/stm32/stm32_spi.c
+++ b/arch/arm/src/stm32/stm32_spi.c
@@ -508,10 +508,6 @@ static struct stm32_spidev_s g_spi6dev =
 };
 #endif
 
-/************************************************************************************
- * Public Data
- ************************************************************************************/
-
 /************************************************************************************
  * Private Functions
  ************************************************************************************/
@@ -1190,6 +1186,7 @@ static void spi_setbits(FAR struct spi_dev_s *dev, int nbits)
 
       if (nbits < 4 || nbits > 16)
         {
+          spierr("ERROR: nbits out of range: %d\n", nbits);
           return;
         }
 
@@ -1814,7 +1811,7 @@ FAR struct spi_dev_s *stm32_spibus_initialize(int bus)
   else
 #endif
     {
-      spierr("ERROR: Unsupbused SPI bus: %d\n", bus);
+      spierr("ERROR: Unsupported SPI bus: %d\n", bus);
       return NULL;
     }
 
diff --git a/arch/arm/src/stm32l4/stm32l4_spi.c b/arch/arm/src/stm32l4/stm32l4_spi.c
index b6b2774d22c..7cd6f3268ec 100644
--- a/arch/arm/src/stm32l4/stm32l4_spi.c
+++ b/arch/arm/src/stm32l4/stm32l4_spi.c
@@ -358,12 +358,6 @@ static struct stm32l4_spidev_s g_spi3dev =
 };
 #endif
 
-/*endif?*/
-
-/************************************************************************************
- * Public Data
- ************************************************************************************/
-
 /************************************************************************************
  * Private Functions
  ************************************************************************************/
@@ -1103,6 +1097,7 @@ static void spi_setbits(FAR struct spi_dev_s *dev, int nbits)
 
       if (nbits < 4 || nbits > 16)
         {
+          spierr("ERROR: nbits out of range: %d\n", nbits);
           return;
         }
 
@@ -1639,7 +1634,7 @@ FAR struct spi_dev_s *stm32l4_spibus_initialize(int bus)
   else
 #endif
     {
-      spierr("ERROR: Unsupbused SPI bus: %d\n", bus);
+      spierr("ERROR: Unsupported SPI bus: %d\n", bus);
       return NULL;
     }