diff --git a/examples/serialrx/serialrx_main.c b/examples/serialrx/serialrx_main.c
index a457ead55..018053fb8 100644
--- a/examples/serialrx/serialrx_main.c
+++ b/examples/serialrx/serialrx_main.c
@@ -171,7 +171,7 @@ int main(int argc, FAR char *argv[])
 #elif defined(CONFIG_EXAMPLES_SERIALRX_PRINTHEX)
           for (i = 0; i < (int)n; i++)
             {
-              printf("0x%02x ", i, buf[i]);
+              printf("0x%02x ", buf[i]);
             }
 
           fflush(stdout);