diff --git a/arch/arm/src/stm32/stm32_spi.c b/arch/arm/src/stm32/stm32_spi.c
index 3629b10734b..1ebcae17fa9 100644
--- a/arch/arm/src/stm32/stm32_spi.c
+++ b/arch/arm/src/stm32/stm32_spi.c
@@ -47,6 +47,7 @@
 #include <nuttx/config.h>
 
 #include <sys/types.h>
+#include <inttypes.h>
 #include <stdint.h>
 #include <stdbool.h>
 #include <string.h>
@@ -1334,7 +1335,7 @@ static uint32_t spi_setfrequency(FAR struct spi_dev_s *dev, uint32_t frequency)
        * faster.
        */
 
-      spiinfo("Frequency %d->%d\n", frequency, actual);
+      spiinfo("Frequency %" PRIu32 "->%" PRIu32 "\n", frequency, actual);
 
       priv->frequency = frequency;
       priv->actual    = actual;
@@ -1623,7 +1624,8 @@ static uint32_t spi_send(FAR struct spi_dev_s *dev, uint32_t wd)
 
   regval = spi_getreg(priv, STM32_SPI_SR_OFFSET);
 
-  spiinfo("Sent: %04x Return: %04x Status: %02x\n", wd, ret, regval);
+  spiinfo("Sent: %04" PRIx32 " Return: %04" PRIx32
+          " Status: %02" PRIx32 "\n", wd, ret, regval);
   UNUSED(regval);
 
   return ret;