diff --git a/test/device/_config.cxx b/test/device/_config.cxx
index e6d75bfa..136a8fe8 100644
--- a/test/device/_config.cxx
+++ b/test/device/_config.cxx
@@ -17,7 +17,7 @@
 #include <sstream> // std::stringstream
 #include <thread>
 
-namespace
+namespace _config
 {
 
 using namespace std;
diff --git a/test/plugins/_plugin.cxx b/test/plugins/_plugin.cxx
index 2a0acd64..dcd18726 100644
--- a/test/plugins/_plugin.cxx
+++ b/test/plugins/_plugin.cxx
@@ -18,7 +18,7 @@
 #include <vector>
 #include <thread>
 
-namespace
+namespace _plugin
 {
 
 using namespace std;
diff --git a/test/plugins/_plugin_manager.cxx b/test/plugins/_plugin_manager.cxx
index ccb91d3a..89e7bc1b 100644
--- a/test/plugins/_plugin_manager.cxx
+++ b/test/plugins/_plugin_manager.cxx
@@ -17,7 +17,7 @@
 #include <vector>
 #include <thread>
 
-namespace
+namespace _plugin_manager
 {
 
 using namespace fair::mq;