diff --git a/libnfc/iso14443-subr.c b/libnfc/iso14443-subr.c
index 4d0a0a9..a474d90 100644
--- a/libnfc/iso14443-subr.c
+++ b/libnfc/iso14443-subr.c
@@ -30,6 +30,7 @@
 #include <string.h>
 
 #include <nfc/nfc.h>
+#include "nfc-internal.h"
 
 
 /**