diff --git a/src/raspi_keyer.cpp b/src/raspi_keyer.cpp
index f560021..984a45c 100644
--- a/src/raspi_keyer.cpp
+++ b/src/raspi_keyer.cpp
@@ -1,5 +1,4 @@
 #include <stdio.h>
-#include <inttypes.h>
 
 #include "pico/stdlib.h"