diff --git a/configure.ac b/configure.ac
index 5647e15..d561d45 100644
--- a/configure.ac
+++ b/configure.ac
@@ -149,9 +149,6 @@ CFLAGS="$CFLAGS -Wall -pedantic -Wextra"
 # Defines and C flags
 CFLAGS="$CFLAGS -std=c99"
 
-# Workarounds for libusb in c99
-CFLAGS="$CFLAGS -Du_int8_t=uint8_t -Du_int16_t=uint16_t"
-
 AC_CONFIG_FILES([
 		Doxyfile
 		Makefile
diff --git a/libnfc/log.c b/libnfc/log.c
index 5d12136..0e40f07 100644
--- a/libnfc/log.c
+++ b/libnfc/log.c
@@ -19,6 +19,7 @@
 
 #include <fcntl.h>
 #include <log4c.h>
+#include <inttypes.h>
 
 #include "log.h"