diff --git a/ndn-cpp/c/encoding/binary-xml-data.c b/ndn-cpp/c/encoding/binary-xml-data.c
index de34f9d..98dde11 100644
--- a/ndn-cpp/c/encoding/binary-xml-data.c
+++ b/ndn-cpp/c/encoding/binary-xml-data.c
@@ -76,7 +76,7 @@
   
   if (!(metaInfo->type < 0 || metaInfo->type == ndn_ContentType_DATA)) {
     // Not the default of DATA, so we need to encode the type.
-    unsigned char *typeBytes;
+    uint8_t *typeBytes;
     unsigned int typeBytesLength = 3;
     if (metaInfo->type == ndn_ContentType_ENCR)
       typeBytes = "\x10\xD0\x91";
@@ -127,7 +127,7 @@
       (decoder, ndn_BinaryXml_DTag_Timestamp, &metaInfo->timestampMilliseconds))
     return error;
   
-  unsigned char *typeBytes;
+  uint8_t *typeBytes;
   unsigned int typeBytesLength;
   if ((error = ndn_BinaryXmlDecoder_readOptionalBinaryDTagElement
       (decoder, ndn_BinaryXml_DTag_Type, 0, &typeBytes, &typeBytesLength)))