libyang REFACTOR printer -> in, parser -> out
diff --git a/src/printer_json.c b/src/printer_json.c
index b4f401a..f67d31f 100644
--- a/src/printer_json.c
+++ b/src/printer_json.c
@@ -18,6 +18,7 @@
 
 #include "common.h"
 #include "log.h"
+#include "out_internal.h"
 #include "parser_data.h"
 #include "plugins_types.h"
 #include "printer_data.h"