diff --git a/fairmq/shmem/FairMQMessageSHM.cxx b/fairmq/shmem/FairMQMessageSHM.cxx
index 6ff59dc0..34fe50c9 100644
--- a/fairmq/shmem/FairMQMessageSHM.cxx
+++ b/fairmq/shmem/FairMQMessageSHM.cxx
@@ -19,8 +19,8 @@
 using namespace std;
 using namespace fair::mq::shmem;
 
-namespace bipc = boost::interprocess;
-namespace bpt = boost::posix_time;
+namespace bipc = ::boost::interprocess;
+namespace bpt = ::boost::posix_time;
 
 atomic<bool> FairMQMessageSHM::fInterrupted(false);
 fair::mq::Transport FairMQMessageSHM::fTransportType = fair::mq::Transport::SHM;
diff --git a/fairmq/shmem/FairMQTransportFactorySHM.cxx b/fairmq/shmem/FairMQTransportFactorySHM.cxx
index ce5695ed..03ff2ec6 100644
--- a/fairmq/shmem/FairMQTransportFactorySHM.cxx
+++ b/fairmq/shmem/FairMQTransportFactorySHM.cxx
@@ -28,9 +28,9 @@
 using namespace std;
 using namespace fair::mq::shmem;
 
-namespace bfs = boost::filesystem;
-namespace bpt = boost::posix_time;
-namespace bipc = boost::interprocess;
+namespace bfs = ::boost::filesystem;
+namespace bpt = ::boost::posix_time;
+namespace bipc = ::boost::interprocess;
 
 fair::mq::Transport FairMQTransportFactorySHM::fTransportType = fair::mq::Transport::SHM;
 
diff --git a/fairmq/shmem/FairMQUnmanagedRegionSHM.cxx b/fairmq/shmem/FairMQUnmanagedRegionSHM.cxx
index 791f281b..7bc18e89 100644
--- a/fairmq/shmem/FairMQUnmanagedRegionSHM.cxx
+++ b/fairmq/shmem/FairMQUnmanagedRegionSHM.cxx
@@ -13,7 +13,7 @@
 using namespace std;
 using namespace fair::mq::shmem;
 
-namespace bipc = boost::interprocess;
+namespace bipc = ::boost::interprocess;
 
 FairMQUnmanagedRegionSHM::FairMQUnmanagedRegionSHM(Manager& manager, const size_t size, FairMQRegionCallback callback)
     : fManager(manager)
diff --git a/fairmq/shmem/Manager.cxx b/fairmq/shmem/Manager.cxx
index e85b1020..05f3cf82 100644
--- a/fairmq/shmem/Manager.cxx
+++ b/fairmq/shmem/Manager.cxx
@@ -9,6 +9,9 @@
 #include <fairmq/shmem/Manager.h>
 #include <fairmq/shmem/Common.h>
 
+using namespace std;
+namespace bipc = ::boost::interprocess;
+
 namespace fair
 {
 namespace mq
@@ -16,9 +19,6 @@ namespace mq
 namespace shmem
 {
 
-using namespace std;
-namespace bipc = boost::interprocess;
-
 std::unordered_map<uint64_t, Region> Manager::fRegions;
 
 Manager::Manager(const string& name, size_t size)
diff --git a/fairmq/shmem/Monitor.cxx b/fairmq/shmem/Monitor.cxx
index 4a12ae4b..61c62062 100644
--- a/fairmq/shmem/Monitor.cxx
+++ b/fairmq/shmem/Monitor.cxx
@@ -26,8 +26,8 @@
 #include <poll.h>
 
 using namespace std;
-namespace bipc = boost::interprocess;
-namespace bpt = boost::posix_time;
+namespace bipc = ::boost::interprocess;
+namespace bpt = ::boost::posix_time;
 
 using CharAllocator   = bipc::allocator<char, bipc::managed_shared_memory::segment_manager>;
 using String          = bipc::basic_string<char, char_traits<char>, CharAllocator>;
diff --git a/fairmq/shmem/Region.cxx b/fairmq/shmem/Region.cxx
index bef91d96..7c9cf17c 100644
--- a/fairmq/shmem/Region.cxx
+++ b/fairmq/shmem/Region.cxx
@@ -12,6 +12,11 @@
 
 #include <boost/date_time/posix_time/posix_time.hpp>
 
+using namespace std;
+
+namespace bipc = ::boost::interprocess;
+namespace bpt = ::boost::posix_time;
+
 namespace fair
 {
 namespace mq
@@ -19,11 +24,6 @@ namespace mq
 namespace shmem
 {
 
-using namespace std;
-
-namespace bipc = boost::interprocess;
-namespace bpt = boost::posix_time;
-
 Region::Region(Manager& manager, uint64_t id, uint64_t size, bool remote, FairMQRegionCallback callback)
     : fManager(manager)
     , fRemote(remote)