diff --git a/src/lr-wpan/test/lr-wpan-cca-test.cc b/src/lr-wpan/test/lr-wpan-cca-test.cc
index 72cec0d1b..ceb4b07d4 100644
--- a/src/lr-wpan/test/lr-wpan-cca-test.cc
+++ b/src/lr-wpan/test/lr-wpan-cca-test.cc
@@ -35,8 +35,6 @@
 
 using namespace ns3;
 
-using namespace ns3;
-
 NS_LOG_COMPONENT_DEFINE ("lr-wpan-clear-channel-assessment-test");
 
 /**
diff --git a/src/lr-wpan/test/lr-wpan-ed-test.cc b/src/lr-wpan/test/lr-wpan-ed-test.cc
index 87d4ad486..41f408723 100644
--- a/src/lr-wpan/test/lr-wpan-ed-test.cc
+++ b/src/lr-wpan/test/lr-wpan-ed-test.cc
@@ -34,8 +34,6 @@
 
 using namespace ns3;
 
-using namespace ns3;
-
 NS_LOG_COMPONENT_DEFINE ("lr-wpan-energy-detection-test");
 
 /**