diff --git a/tests/test-publish-async.cpp b/tests/test-publish-async.cpp
index a140e43..72dec4b 100644
--- a/tests/test-publish-async.cpp
+++ b/tests/test-publish-async.cpp
@@ -18,7 +18,7 @@
 using namespace ptr_lib;
 using namespace func_lib;
 
-static unsigned char DEFAULT_PUBLIC_KEY_DER[] = {
+static uint8_t DEFAULT_PUBLIC_KEY_DER[] = {
 0x30, 0x81, 0x9F, 0x30, 0x0D, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x81,
 0x8D, 0x00, 0x30, 0x81, 0x89, 0x02, 0x81, 0x81, 0x00, 0xE1, 0x7D, 0x30, 0xA7, 0xD8, 0x28, 0xAB, 0x1B, 0x84, 0x0B, 0x17,
 0x54, 0x2D, 0xCA, 0xF6, 0x20, 0x7A, 0xFD, 0x22, 0x1E, 0x08, 0x6B, 0x2A, 0x60, 0xD1, 0x6C, 0xB7, 0xF5, 0x44, 0x48, 0xBA,
@@ -30,7 +30,7 @@
 0x00, 01  
 };
 
-static unsigned char DEFAULT_PRIVATE_KEY_DER[] = {
+static uint8_t DEFAULT_PRIVATE_KEY_DER[] = {
 0x30, 0x82, 0x02, 0x5d, 0x02, 0x01, 0x00, 0x02, 0x81, 0x81, 0x00, 0xe1, 0x7d, 0x30, 0xa7, 0xd8, 0x28, 0xab, 0x1b, 0x84,
 0x0b, 0x17, 0x54, 0x2d, 0xca, 0xf6, 0x20, 0x7a, 0xfd, 0x22, 0x1e, 0x08, 0x6b, 0x2a, 0x60, 0xd1, 0x6c, 0xb7, 0xf5, 0x44,
 0x48, 0xba, 0x9f, 0x3f, 0x08, 0xbc, 0xd0, 0x99, 0xdb, 0x21, 0xdd, 0x16, 0x2a, 0x77, 0x9e, 0x61, 0xaa, 0x89, 0xee, 0xe5,
@@ -80,7 +80,7 @@
     // Make and sign a Data packet.
     Data data(interest->getName());
     string content(string("Echo ") + interest->getName().toUri());
-    data.setContent((const unsigned char *)&content[0], content.size());
+    data.setContent((const uint8_t *)&content[0], content.size());
     data.getMetaInfo().setTimestampMilliseconds(time(NULL) * 1000.0);
     keyChain_.signData(data, certificateName_);
     Blob encodedData = data.wireEncode();