diff --git a/arch/avr/src/avr/up_spi.c b/arch/avr/src/avr/up_spi.c
index 7caa2bcc2f..2c4588572b 100644
--- a/arch/avr/src/avr/up_spi.c
+++ b/arch/avr/src/avr/up_spi.c
@@ -40,6 +40,7 @@
 #include <nuttx/config.h>
 
 #include <sys/types.h>
+#include <inttypes.h>
 #include <stdint.h>
 #include <stdbool.h>
 #include <errno.h>
@@ -250,7 +251,7 @@ static uint32_t spi_setfrequency(FAR struct spi_dev_s *dev,
       actual          = priv->actual;
     }
 
-  spiinfo("Frequency %d->%d\n", frequency, actual);
+  spiinfo("Frequency %" PRId32 "->%" PRId32 "\n", frequency, actual);
   return actual;
 }