diff --git a/arch/arm/src/lc823450/lc823450_adc.c b/arch/arm/src/lc823450/lc823450_adc.c
index 96ce6d2637b..6dded5b8e47 100644
--- a/arch/arm/src/lc823450/lc823450_adc.c
+++ b/arch/arm/src/lc823450/lc823450_adc.c
@@ -26,6 +26,7 @@
 
 #include <stdio.h>
 #include <sys/types.h>
+#include <inttypes.h>
 #include <stdint.h>
 #include <stdbool.h>
 #include <unistd.h>
@@ -224,7 +225,7 @@ static void lc823450_adc_start(FAR struct lc823450_adc_inst_s *inst)
     {
       if (pclk / div <= LC823450_MAX_ADCCLK)
         {
-          ainfo("ADCCLK: %d[Hz]\n", pclk / div);
+          ainfo("ADCCLK: %" PRId32 "[Hz]\n", pclk / div);
           break;
         }
     }