diff --git a/contrib/hpack/decode.c b/contrib/hpack/decode.c
index 9ef80f0..51ebbf3 100644
--- a/contrib/hpack/decode.c
+++ b/contrib/hpack/decode.c
@@ -11,7 +11,7 @@
  *        -o decode decode.c
  */
 #include <ctype.h>
-#include <stdint.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>