diff --git a/src/bgp/bgp_attr.cc b/src/bgp/bgp_attr.cc
index 38119d0b39d..4e4e7387462 100644
--- a/src/bgp/bgp_attr.cc
+++ b/src/bgp/bgp_attr.cc
@@ -155,7 +155,7 @@ void ClusterListSpec::ToCanonical(BgpAttr *attr) {
 std::string ClusterListSpec::ToString() const {
     std::stringstream repr;
     repr << "CLUSTER_LIST <code: " << std::dec << code;
-    repr << ", flags: 0x" << std::hex << flags << "> :";
+    repr << ", flags: 0x" << std::hex << int(flags) << "> :";
     for (std::vector<uint32_t>::const_iterator iter = cluster_list.begin();
          iter != cluster_list.end(); ++iter) {
         repr << " " << Ip4Address(*iter).to_string();
diff --git a/src/bgp/bgp_proto.cc b/src/bgp/bgp_proto.cc
index 19d6662d0b6..0de7fdcb24c 100644
--- a/src/bgp/bgp_proto.cc
+++ b/src/bgp/bgp_proto.cc
@@ -303,12 +303,12 @@ const string BgpProto::OpenMessage::ToString() const {
 
         Capability::GR gr_params = Capability::GR();
         if (Capability::GR::Decode(&gr_params, param->capabilities)) {
-            os << ", GR_Flags 0x" << std::hex << gr_params.flags;
+            os << ", GR_Flags 0x" << std::hex << int(gr_params.flags);
             os << ", GR_Time " << gr_params.time;
             BOOST_FOREACH(Capability::GR::Family family, gr_params.families) {
                 os << ", GR_family " <<
                     BgpAf::AfiSafiToFamily(family.afi, family.safi);
-                os << ", GR_family_flags 0x" << std::hex << family.flags;
+                os << ", GR_family_flags 0x" << std::hex << int(family.flags);
             }
         }
 
@@ -318,8 +318,8 @@ const string BgpProto::OpenMessage::ToString() const {
                           llgr_params.families) {
                 os << ", LLGR_family " <<
                     BgpAf::AfiSafiToFamily(family.afi, family.safi);
-                os << ", LLGR_family_flags 0x" << std::hex << family.flags;
-                os << ", LLGR_Time 0x" << std::hex << family.time << " Seconds";
+                os << ", LLGR_family_flags 0x" << std::hex << int(family.flags);
+                os << ", LLGR_Time " << family.time << " Seconds";
             }
         }
     }