diff --git a/src/bridge/CMakeLists.txt b/src/bridge/CMakeLists.txt
index 4436724ee..1ad725c01 100644
--- a/src/bridge/CMakeLists.txt
+++ b/src/bridge/CMakeLists.txt
@@ -9,5 +9,4 @@ build_lib(
     model/bridge-channel.h
     model/bridge-net-device.h
   LIBRARIES_TO_LINK ${libnetwork}
-  TEST_SOURCES ${test_sources}
 )
diff --git a/src/csma/CMakeLists.txt b/src/csma/CMakeLists.txt
index 52884036c..2c97becd5 100644
--- a/src/csma/CMakeLists.txt
+++ b/src/csma/CMakeLists.txt
@@ -11,5 +11,4 @@ build_lib(
     model/csma-channel.h
     model/csma-net-device.h
   LIBRARIES_TO_LINK ${libnetwork}
-  TEST_SOURCES ${test_sources}
 )