diff --git a/ndn-cpp/c/encoding/binary-xml-key.h b/ndn-cpp/c/encoding/binary-xml-key.h
index 6aecd20..391fa72 100644
--- a/ndn-cpp/c/encoding/binary-xml-key.h
+++ b/ndn-cpp/c/encoding/binary-xml-key.h
@@ -7,8 +7,8 @@
 #ifndef NDN_BINARYXMLKEY_H
 #define NDN_BINARYXMLKEY_H
 
-#include "../errors.h"
 #include "../key.h"
+#include "../errors.h"
 #include "binary-xml-encoder.h"
 #include "binary-xml-decoder.h"