diff --git a/tests/test-encode-decode-data.cpp b/tests/test-encode-decode-data.cpp
index 078e31c..a123cd8 100644
--- a/tests/test-encode-decode-data.cpp
+++ b/tests/test-encode-decode-data.cpp
@@ -18,8 +18,8 @@
 
 using namespace std;
 using namespace ndn;
-using namespace ptr_lib;
-using namespace func_lib;
+using namespace ndn::ptr_lib;
+using namespace ndn::func_lib;
 #if NDN_CPP_HAVE_STD_FUNCTION
 // In the std library, the placeholders are in a different namespace than boost.                                                           
 using namespace func_lib::placeholders;