diff --git a/SConstruct b/SConstruct
index 0bd9e71a1..a45469af6 100644
--- a/SConstruct
+++ b/SConstruct
@@ -25,7 +25,7 @@ core.add_sources([
     'test.cc',
     'random-variable.cc',
     'rng-stream.cc',
-    'interface.cc',
+    'ns-unknown.cc',
     'iid-manager.cc',
     ])
 env = Environment()
@@ -50,7 +50,7 @@ core.add_inst_headers([
     'test.h',
     'random-variable.h',
     'rng-stream.h',
-    'interface.h',
+    'ns-unknown.h',
     'iid-manager.h',
     ])
 
diff --git a/src/core/interface.cc b/src/core/ns-unknown.cc
similarity index 99%
rename from src/core/interface.cc
rename to src/core/ns-unknown.cc
index 4e0602593..b1568111a 100644
--- a/src/core/interface.cc
+++ b/src/core/ns-unknown.cc
@@ -18,7 +18,7 @@
  *
  * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
  */
-#include "interface.h"
+#include "ns-unknown.h"
 #include <string>
 #include <list>
 #include <stdint.h>
diff --git a/src/core/interface.h b/src/core/ns-unknown.h
similarity index 100%
rename from src/core/interface.h
rename to src/core/ns-unknown.h