diff --git a/ccnx/ccnx-common.h b/ccnx/ccnx-common.h
index 1824025..96f60ff 100644
--- a/ccnx/ccnx-common.h
+++ b/ccnx/ccnx-common.h
@@ -40,10 +40,9 @@
 #include <utility>
 #include <string.h>
 
-using namespace std;
 namespace Ccnx {
-typedef vector<unsigned char> Bytes;
-typedef vector<string>Comps;
+typedef std::vector<unsigned char> Bytes;
+typedef std::vector<std::string>Comps;
 
 typedef boost::shared_ptr<Bytes> BytesPtr;